MCAT Evolution Word Scramble
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Question | Answer |
Bottle neck | an evolutionary event in which a significant percentage of a population or species is killed or otherwise prevented from reproducing. |
homologous structure | similar structure that share a common evolutionary origin. ex the limbs of mamals |
group selection | this hypothesis stated that a certain gene for not reproducing was inheritied, thus controling polutaion size at an advantagous level |
stabilizing slection | maintains uniform charchter in a population by eliminating deviations from the norm. |
gene flow | migration of individuals b/w populations will result in a loss or gain of genes and thus change the compostion of the gene pool |
directional selection | produces an adaptave change over time with an increase in the proprtion of individuals with an extream phenotype. This occurs when organisms must adapt to a changing enviorment |
genetic drift | changes in the composition of the gene pool due to chance |
asortive mating | mates selectied according to critiereia such as phenotype and proximity |
disruptive selection | population genetics that simultaneously favor individuals at both extremes of the distribution. ex finch beak size |
convergent evolution | refers to the independant development of dissimilar charachteristics in two or more lineages NOT sharing common ancestry. ex fish dolphins |
parallel evolution | is the development of a similar trait in different not closely related species (that is in species of a different clade), but descending from the same ancestor |
divergent evolution | refers to the individual development of dissimilar charachteristics in two or more lineages sharing common ancestry |
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studypants
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