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Period. 3

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Divergent, parallel, and convergent evolution 

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Divergent, parallel, and convergent evolution 

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The opposite of divergent evolution, in which related species evolve different traits. Convergent evolution is similar to parallel evolution, in which two similar but independent species evolve in the same direction and independently acquire similar characteristics

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Process of change in the sequence composition of cellular molecules such as DNA, RNA, and proteins across generations.

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The biogenetic law or embryological parallelism.  a largely discredited biological hypothesis that in developing from embryo to adult, animals go through stages resembling or representing successive stages in the evolution of their remote ancestors

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Organs in the body that are smaller and simpler than those in related species. Vestigiality is evidence or evolution, since they only make sense if evolution has occurred.

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V: variation
I: inheritance
S: selection
T: time

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Variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce

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Seasonal movement of animals from one place to another and gene flow is an important mechanism for transferring genetic diversity among populations.

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An organ or bone that appears in different animals, underlining anatomical commonalities demonstrating descent from a common ancestor.

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Natural selection arising through preference by one sex for certain characteristics in individuals of the other sex.

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The changing of the structure of a gene, resulting in a variant form that may be transmitted to subsequent generations, caused by the alteration of single base units in DNA, or the deletion, insertion, or rearrangement of larger sections of genes or chromosomes.

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The process whereby organisms better adapted to their environment tend to survive and produce more offspring.