BIOL 1001 : Exam 3 Review

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15 Mar 2019
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Change over time in the characteristics of populations. Can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism"s offspring). When an organism adapts to a specific environment. Differences in reproductive success depend on the traits of individuals. An organ or bone that appears in different animals but have the same evolutionary origin. The bones in birds and mammals are virtually the same but have different structures and locations. Independent adaptations that are very different in internal anatomy. The wings of a fly and a bird are very different but have the same function. Structures that no longer serve a purpose. Whales have small pelvic and leg bones embedded in their sides that they used previously at some point in their evolution. The intentional breeding of animals or plants for desired traits.

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