ANTH102 Quiz 3

ANTH102 Quiz 3 - Term Definition Genotype Genetic make up...

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Term: Genotype Definition: Genetic make up of an individual. Term: Phenotype Definition: An observable or measurable feature of an organism. Can be anatomical, biochemical, or behavioral. Term: Environment vs pheno/genotype Definition: Affects phenotype because traits are adjustable. Genotype is genetic and cannot not be altered. Term: Two types of Natural Selection Definition: 1) Directional 2) Stabilizing Term: Directional Selection Definition: Natural selection that drives evolutionary change by selecting for greater or lesser frequency of a given trait in a population.
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Term: Stabilizing Selection Definition: Selection that maintains a certain phenotype by selecting against deviations from it. Term: Gene Flow Definition: Movements of genes between populations. Term: Gene Drift Definition: Random changes in gene frequency in a popluation. Term: Founder Effect Definition: New populations that become isolated from the parent population carry only the genetic variation of the founders. Term: Genetic Bottleneck Definition: Temporary reduction in size of a population or species.
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Term: Darwin's 2 Components of Sexual Selection Definition: The struggle between males to gain access to females and the struggle of females to choose the right mate. Term: Sexual Dimorphism Definition: The difference in size, color, shape, between the sexes. (Ex: Males are bigger/stronger than females) Term: Taxonomy Definition: The basis for the study of biological classification today. Term: Homology Definition: Similarity of traits resulting from shared ancestry. Term: Analogous Definition: Having similar traits due to similar use (not due to shared ancestry).
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Term: Homologous Features Definition: Similar features in two related organisms that look alike because of a shared evolutionary history.
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