Evolution Study Guide Answers – Flashcards
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How old is earth roughly? a. Not very old b. Thousands of years c. Millions of years d. Billions of years
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Billions of years
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How old did scientists think the earth was during the time of Darwin?
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6,000 years
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How did Darwin come up with his theory of evolution by the process of natural selection?
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Lamarck suggested that species could change and explained evolution through a natural process
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Who "helped" come up with the theory of evolution and how did they play a role in it?
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Wallace helped come up with the theory of evolution.(natural selection--survival of the fittest.) with similar ideas as Darwin but Darwin was a step ahead
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Why do species survive and reproduce?
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In order to keep their species alive
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Are species aiming to be perfect? Why or why not?
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No because they do not understand the concept of perfection
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How do species vary?
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Globally, locally, over time
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Why do species vary?
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Species vary due to genetic differences over long periods of time. Species learn to adapt to things overtime which can eventually change their physical appearance
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What does Grant's study (the beak lab) tell and show us about evolution? How do species evolve over time?
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It shows how it changes due to the environment, pressure, and isolation
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How do we compare species?
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Genotype and phenotype
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What does it tell us when we compare species?
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Tells us what came from a common ancestor
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Are bat wings and insect wings from a common ancestor, why or why not?
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No because even though they do the same thing, they are still very different organisms
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Can species be unrelated, but have similar structures? What is this called?
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Yes, it is called analogous
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What pieces of evidence tell you that species are related?
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Comparison of the DNA sequences of organisms can tell you if living things are related
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Why do we look at DNA to study evolution?
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By comparing DNA sequences and seeing if there is a specific pattern from two organisms you can learn about their ancestral relationship
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Why do we classify species and how do we do it? What does the binomial name tell us?
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Scientist classify living things because it is easier to explain their relationship to one another and be able to compare living things
