Factors that affect evolution
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9 Terms
Inheritable mutations
An inheritable chabge to DNA that occurs on germ cells
gene pools
consist of all the alleles in wll the individuals that make up a population
gene flow
the exchange of alleles between two different populations of the same species
genetic drift (genetic bottleneck, founder effect)
a change in a population’s gene pool due to random chance
genetic bottleneck
when an event, like natural disaster significantly reduces a populations size a d gene pool. by chance, the survivors will have certain alleles
founders effect
when a small number of individuals move to a new habitat and start a new population. the gene pool depends on the founding population.
inbreeding
the reproduction of closely related animals over multiple generations
artificial selection/selective breeding
happens when humans decide which traits are useful
mutations
the source of new alleles in a population