Forensic Mid-Term Chapters 1-6 ~Stout – Flashcards
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A fact is a statement or information that can be verified
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True
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Through our senses of sight, taste, hearing, smell, and touch, we gather info every single moment about what is around us
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True
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The terms grid, linear, quadrant, zone, and spiral are typically used to describe
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Crime scene search patterns
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The hair shaft is made up of what three layers?
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The inner medulla, a cortex, and an outer cuticle
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Synthetic polymer fibers, which all originate with petroleum products are
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Non-cellulose-based fibers
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One of the most important tools of the forensic investigator is the ability to
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Observe, interpret, and report observations clearly
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Class evidence narrows an identity to
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A group of persons or things
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The first to arrive at a crime scene are usually
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Police officers
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Hair is considered
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Class evidence
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Hair can adhere to clothes, carpets, and many other surfaces and be transferred to other locations. This is called
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Secondary transfer
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Fibers that have been spun together are called
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Yarn
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Fibers are classified as either
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Natural fibers or synthetic fibers
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Natural fibers come from
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Animals, plants, and minerals that are mined from the ground
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All plant fibers share the common polymer that is
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Cellulose
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What are four ways fibers are collected from a crime scene?
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Vaccum Lint roller Tape Forcepts
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Pollen grain
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A reproductive structure that contains the male gametes of seed plants
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Forensic botany
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The application of plant science to crime-scene analysis or the resolution of criminal cases
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Angiosperm
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A flowering plant that produces seeds within a fruit
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Forensic palynology
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The use of pollen and spore evidence to help solve criminal cases
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Pollination
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The transfer of pollen from the male part to the female part of a seed plant
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PMI
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Time elapsed between a person's death and discovery of the body
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Assemblage
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Group of plant species in an area dominated by one species that share the same habitat requirements
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Ten card
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A form used to record and preserve a person's fingerprints
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Patent fingerprint
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A visible fingerprint produced when fingers coated with blood, ink, or some other substance touches a surface and transfers their print to that surface
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Arch
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A fingerprint pattern in which the ridge pattern originates from one side of the print and continues to the other side
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Delta
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A triangular ridge pattern
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Loop
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A fingerprint pattern in which the ridge pattern flows inward and returns in the direction of the origin
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Core
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The center of a loop
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Plastic fingerprint
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A 3D fingerprint made in soft material such as clay, soap, or putty
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Whorl
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A fingerprint pattern that resembles a bull's eye
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Latent fingerprint
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A concealed fingerprint made visible through the use of powders or forensic techniques
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The field of forensic palynology is the study of
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Pollen and spore evidence to help solve criminal cases
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A pollen grain is
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The male reproductive structure of the seed plant
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Which term describes the study of tree rings?
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Dendrochronology
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Seed plants include two groups
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Gymnosperms and angiosperms
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The pistol in the female part of a flower that produces
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Eggs
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The male part of the flower that is responsible for pollen production and dispersal is the
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Stamen
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Groups of plants that are usually dominated by one species are called
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Assemblages
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What percent of latent fingerprints at a crime scene come from the palm or side of the hand?
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20% to 30%
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Actual indentions left in some soft material such as clay, putty, or wax is which type of fingerprint?
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Plastic
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Pudd'nhead Wilson is a lawyer created by Mark Twain in the novel of the same name, published in November of 1894. In his final address to the jury, lawyer Wilson exhibits his knowledge of the cutting edge technology of the day by referring to
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Fingerprints as forensic evidence
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Beginning in 1896, Sir Edmund Richard Henry, with the help of two colleagues, created a system that divided fingerprint records into groups based on whether they have
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An arch, a loop pattern, or a whorl
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During what week of gestation are fingerprints formed?
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10th
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There are about ______ individual ridge characteristics on the average full fingerprint?
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150
