Chapters 1-5 – Flashcards
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Franz Boas is dressed to explore the Arctic. This illustrates humans' ability to deal with their environment through
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material culture
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What are the steps of the scientific method in their proper order?
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Identify a problem; state a hypothesis; collect data; test the hypothesis
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New research in Ethiopia in 2001 changed the way we think about human origins by demonstrating that the earliest hominins lived in
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woodlands
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Which of the following is NOT a uniquely human activity: making a bookshelf growing corn climbing a tree gossiping with friends
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climbing a tree
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Physical anthropology is the study of human __________ and human biocultural _________
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evolution; variation
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For your physical anthropology research project, you report that you measured the length of 150 gorilla thighbones, and you suggest that the two groups you found represent different sexes. What problem might your professor have with this report?
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Your report does not attempt to test a hypothesis
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Physical anthropologists can understand human biological variation by looking at changes in
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genes, health, lifestyle
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Your professor researches the Turkana pastoralists of Kenya, investigating both the genetic changes that allow them to easily digest milk and the role that dairy animals have played in their history. Your professor most likely uses which of the following methods in her research?
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the biocultural approach
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Which of the following would a physical anthropologist NOT study to learn more about humans: genes and reproduction pottery and stone tools disease and nutrition bones and teeth
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pottery and stone tools
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Several forensic anthropologists have dealt with the aftermath of Argentina's "Dirty War" (1970s and 1980s) during which many people disappeared. Which of the following techniques would be inappropriate for anthropologists to use in attempting to find and identify these individuals: studying skeletons, using methods of physical anthropology excavating mass graves, using archaeological techniques creating a glossary of the local language, using methods of linguistic anthropology talking to locals who were alive at the time, using ethnographic methods of cultural anthropology
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creating a glossary of the local language, using methods of linguistic anthropology
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T/F: Swine flu (H1N1) is the result of viral evolution
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True
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T/F: Comparing the skeletons of Aegyptopithecus and Oreopithecus, two extinct species of primates, can provide physical anthropologists information about the human past
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True
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Your cousin insists that he ran into your doppelganger the spitting image of you at the mall. You counter this assertion with your knowledge of physical anthropology by replying that
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both Malthus and Darwin observed that variation exists within a species and no two members are exactly alike
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The "peppered" moths of northern England range from light-colored to dark-colored. During the Industrial Revolution, soot and smoke covered trees, and the peppered moth population became predominantly dark-colored, as these moths were better able to avoid predation by blending into their surroundings. This example illustrates which force of evolution?
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natural selection
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T/F: The HMS Beagle, whose path is seen here, circumnavigated the globe
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True
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Darwin did not know about genes but believed that traits passed from parents to offspring by particles called
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gemmules
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One of the theories put forth to explain the evolution of modern humans is that Homo sapiens arose more or less simultaneously in a variety of major geographical locales in the Old World (Europe, Africa, and Asia) through interbreeding of populations. A criticism of this theory based on the forces of evolution is that
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there would have been insufficient gene flow among the relatively few Homo sapiens in the world to maintain a single gene pool
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Your history professor is interested in genealogy and tells your class that, on his mother's side, he is descended from the original Amish population, a religious and insular group of people in Pennsylvania who tended to marry within their social circle. He also notes that many of his extended family members have the condition polydactyly, an extra finger or toe. The high frequency of polydactyly in your professor's ancestry is an example of _________________ in the Pennsylvania Amish
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genetic drift
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T/F: In a simplified example of eye color inheritance, B stands for the allele for brown eyes and is dominant. Blue eyes are represented by the recessive allele b. A child who inherits one of each allele from her parents will have the genotype Bb and therefore have brown eyes.
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True
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This picture shows two variants in ___________ or physical appearance of seven characteristics of the pea plant
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phenotype
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T/F: The largest organelles in a cell are the mitochondria
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False
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T/F: Prokaryotes have multiple cells while eukaryotes have one
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False
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An offspring with the chromosome pair XX will be
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female
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T/F: This picture demonstrates that E. coli is a prokaryotic bacterium
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True
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During a visit to the circus, you and a friend stumble into a tent with a "freaks of nature" display. Your friend points out a photograph of a man whose left arm is protruding from his left hip rather than from his shoulder. You explain to your friend that this condition was likely caused by a mutation in the man's
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homeotic genes
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Structural proteins found in the human body are responsible for all of the following EXCEPT: the shape of your femur the size of your wisdom teeth when you went through puberty whether your hair is straight or curly
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when you went through puberty
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The somatic type of eukaryotic cells makes up: bone and muscle skin and fat hair and brain all of these are correct
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all of these are correct
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If you wanted to sequence the genome of Ötzi, the 5,300-year-old "Iceman" mummy found in the Alps in 1991, which method would you be most likely to use?
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PCR
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Human and chimpanzee DNA is about _________ identical
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98%
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If one side of the DNA ladder includes the sequence CTAATGT, the complementary base configuration for this sequence will be
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GATTACA
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The three patterns of natural selection are
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stabilizing, directional, and disruptive
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T/F: This diagram represents the founder effect, that is, when a population moves into a new area and becomes reproductively isolated
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True
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Another name for a reproductive population is
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deme
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Compared to the normal male karyotype, a man affected by Klinefelter's syndrome has
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one more X chromosome
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The genotype that confers protection against malaria while allowing an individual to survive and reproduce is
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AS
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T/F: The gene pool includes only the beneficial traits in a population
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False
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T/F: Mutation is the only source of new genetic material
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True
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T/F: A change in allele frequencies from one generation to the next is an example of evolution
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True
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This figure shows significant genetic change in horses over millions of years, which is also called
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macroevolution
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The case of the peppered moth and industrial melanism during the Industrial Revolution in England illustrates
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change in frequency of the nonmelanic genotype
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The medullary cavities of bone exist in the
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diaphyses
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T/F: These children are suffering from hypoxia (short)
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False
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A gradual change in phenotype over a geographical area is called a
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cline
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The concept of race began
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during the Renaissance
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Frank Livingstone, a noted physical anthropologist, is famous for having said about human diversity in appearance, "There are no _________; there are only ___________"
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races; clines
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T/F: For humans, hair loss and sweating are both thermoregulatory adaptations to heat
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True
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People who live in the areas of the world highlighted in red have adapted to these particular geographical conditions and are likely to
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be short
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One of your classmates moved to the United States from Somalia as a kid in the late 1990s. After seeing a picture of his family, you notice that he and his sister must have been undernourished for several years. You arrive at this conclusion because your classmate
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and his sister are both much shorter than their parents
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T/F: In general, populations living between 0-20°N latitude have the darkest skin color
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False
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According to Bergmann's and Allen's rules, all of the following are true EXCEPT: the Igbo of Nigeria have narrow bodies the Berbers of Morocco have long limbs to dissipate heat the Inuit in Greenland are tall and long-limbed the Yupik of Alaska have short, squat bodies to retain heat
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the Inuit in Greenland are tall and long-limbed
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What is anthropology?
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study of humans bicultural approach holistic multiple perspectives all times periods
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Big question of anthropology
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What does it mean to be humans?
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4 subfields of anthropology
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1) cultural 2) archaeology 3) linguistic 4) biological
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5 specialties within biological anthropology
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1) primatology 2) paleoanthropology 3) human biology 4) bioarchaeology 5) forensic anthropology
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3 main figures in history of biological anthropology
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Franz Boas, Aleš Hrdlička, Earnest Hooton
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Franz Boas
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scientific method
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Aleš Hrdlička
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professional society scientific journal
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Earnest Hooton
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trained most of 1st generation of physical anthropologists
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Scientific Method
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purpose - research - hypothesis - experiment - analysis - conclusion
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6 events of human evolution (what makes us human)
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1) bipedalism 2) non-honing chewing 3) material culture 4) speech 5) hunting 6) agriculture
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General belief system in Middle Ages
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fixity of species
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Great chain of being
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Aristotle God - Angel - Heaven - Human - Beast - Plant - Flame - Stone - The Ladder of Intellect
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Fixity of species
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Earth is "full"
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Ray
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reproductive isolation 1st taxonomy (physical)
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Buffon
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environment as agent of change interaction between environment & living forms
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Linnaeus
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nomenclature
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Hooke
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fossils
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Lamarck
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acquired characteristics body senses "need" and "want" 1st model of evolution
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Lyell
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founder of geology time depth of earth uniformitarianism
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Malthus
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population increase competition for resources
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Wallace
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theory of natural selection sent Darwin essay
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Main aspects of Darwin's theory of natural selection
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evolution finches on Galapagos Islands - natural selection biological variation is inherited nature is selective favorable traits (based on environment)
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The level that natural selection and evolution each work on
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natural selection - the individual evolution - populations
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Blending inheritance
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2 pure breds = hybrids with no blending
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Mendel and his experiments
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pea plants multiple generations Mendelian inheritance genes inherited
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allele
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different form of gene (example: tall or short)
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dominant
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always physically expressed
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recessive
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masked by dominant allele
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genotype
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pair of alleles
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phenotype
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physical appearance
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homozygous
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2 alleles are the same (example: RR or rr)
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heterozygous
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2 alleles are different (example: Rr)
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Requirements of Mendelian traits
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simple trait 2 alleles at 1 locus 2 phenotypes 3 genotypes 1 dominant and 1 recessive
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Evolutionary synthesis
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Darwin's Theory of Evolution (natural selection) + Mendel's Heredity (traits passed)
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Prokaryotes
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3.5 bya single-celled bacteria no nucleus no organelles
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Eukaryotes
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1.2 bya some single-celled all multicellular organisms DNA contained in nucleus organelles
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DNA
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deoxyribonucleic acid genetic info packaged as chromosomes
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RNA
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ribonucleic acid used in making proteins
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DNA structure
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double stranded/double helix sugar & phosphate group nucleotides
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DNA base pairs
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Adenine & Thymine Cytosine & Guanine
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3 Functions of DNA
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1) stores and carries genetic information 2) replicates itself 3) controls protein synthesis
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Types of RNA
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mRNA, tRNA, rRNA
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Genes and the 3 types
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1) structural 2) regulatory 3) homeobox
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structural genes
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examples: hair color, skin color, blood type
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regulatory genes
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on/off switches for genes examples: puberty, Marfan syndrome
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homeobox genes
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regulate body formation during development examples: leg antennae
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2 types of cells
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1) somatic - diploid 2) gametes - haploid
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mitosis
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occurs in somatic cells 1 replication 1 cell --> 2 cells diploid
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meiosis
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occurs in gametes cells 1 replication 2 cells --> 4 cells haploid
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Law of Segregation
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during the production of gametes the two copies of each hereditary factor segregate so that offspring acquire one factor from each parent
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Law of Independent Assortment
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allele pairs separate independently during the formation of gametes
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incomplete dominance
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1 dominant allele (example: Rr)
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complete dominance
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2 dominant alleles, both fully expressed (example: RR)
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microevolution
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short term (example: minutes/hours)
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macroevolution
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long term (example: days/months/years)
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4 forces of evolution
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1) mutation 2) genetic drift 3) gene flow 4) natural selection
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4 types of mutation
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1) point 2) frameshift 3) transposable 4) chromosomal
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2 causes of mutation
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1) spontaneous 2) induced
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spontaneous mutation
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occur during DNA replications
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induced mutation
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caused by exposure to mutagens (example: UV rays, radiation,
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stabilizing selection
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cuts off extreme traits
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directional selection
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favors 1 extreme trait
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disruptive selection
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favors both extreme traits (can form 2 new species)
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Hardy-Weinberg equilibrium
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equilibrium = not evolving compares ideal population to real population similar = no evolution
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exogamous mating
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more gene flow, more variation
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endogamous mating
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less gene flow, less variation
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patrilocal
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males remain in birthplace, females migrate
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matrilocal
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females remain in birthplace, males migrate
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positive assortative mating
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when people choose to mate with persons similar to themselves
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negative assortative mating
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when people avoid mating with persons similar to themselves
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inbreeding
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sexual reproduction from closely related people or animals, especially over many generations
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measuring simple traits
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blood typing
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measuring complex traits
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light reflectance (skin color) & anthropometry (growth)
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Race is a __________ concept
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social
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T/F: There are a set number of races
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False; there are unlimited races & no clear cut boundaries
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clines
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continuous variation
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Blumenbach
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biological taxonomy based on skin color and cranial variation "5 races" which did not change
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Boas
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claimed the race concert to be invalid said race is not static
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Lewontin
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tested race concept based on genetics races only accounted for 5-10% of population 90% shared by all groups
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4 levels of human adaptation
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1) genetic: natural selection 2) developmental: during growth 3) acclimatization: throughout life 4) cultural: behavioral changes
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stress
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interference with homeostasis
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homeostasis
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maintains body within its normal limits
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plasticity
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ability to respond to stress
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functional adaptation
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response to stress biological adjustments within a lifetime
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acclimation
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minutes to hours
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acclimatization
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days to months
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physiological adaptation to heat
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acclimation: sweating, vasodilation acclimatization: lower heart rate, lower body core temperature
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developmental acclimatization to high altitude
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permanent change NOT genetic results from continuous exposure to stress during growth/development (example: shorter, larger lungs)
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Bergmann's Rule
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larger species = cold environment smaller species = warm/hot environment
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Allen's Rule
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shorter, bulkier limbs = cold environment longer, narrower limbs = warm/hot environment
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melanocytes
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pigments
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melanin
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dark colored pigment protects from UV radiation
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skin color and altitude
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high altitude = light skin favorable
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skin color at equator
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darkest
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skin color at the poles
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lightest
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What protects skin from UV?
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folic acid & vitamin D
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hypoxia
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body tissues do not get adequate oxygen
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rickets
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lack of vitamin D
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biological adaptation to disease
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immune system: antibodies genetics: "natural" immunity
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cultural adaptation to disease
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treatment: antibiotics & vaccines clean water, good public sanitation
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infectious disease
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caused by microorganisms bacteria, virus, fungi, parasite, etc.
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noninfectious disease
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rated to behavior, age, etc.
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endemic
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persistent in population stays at low levels
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epidemic
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rapid increase in # of cases specific area
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pandemic
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epidemics that affect a larger area or the world (example: AIDS)
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aspects of culture that impact disease
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population size food acquisition method degree of mobility sanitation technology
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hunting-gathering
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endemic few noninfectious small, mobile groups short life expectancy fewer sanitation problems
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farming
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infectious: endemic & epidemic few noninfectious larger population sedentary short life expectancy poor sanitation, water contamination, & animals
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urban
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epidemic & pandemic few noninfectious large & dense populations sedentary trade & warfare short life expectancy poor sanitation & water contamination
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modern society
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low infectious: epidemic & pandemic high noninfectious large & dense populations sedentary medical technology: antibiotics & vaccines long life expectancy good sanitation