The type of genetic drift that follows the colonization of a new habitat by a small group of individuals is called
Founder Effect
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A trait that is controlled by two or more pairs of genes
Polygenic Trait
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Natural selection acts directly on (genotype/phenotype) - choose one
Phenotype!
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Temporal isolation occurs when two different parts of the population reproduce at different _______________ .
Times
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There are two types of genetic drift, founder effect and the ________________ .
Bottleneck effect
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20
Give an example of one source of genetic variation for a population
Mutations (will also accept sexual reproduction)
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All of the genetic information (all of the alleles) found in a population.
Gene pool
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This selection pressure favors ONE of the extreme phenotypes (one side of the bell curve) , which shifts allele frequencies to one side or the other
Directional Selection
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A group of organisms that can mate with each other and produce fertile offspring are called a
Species
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Suppose a sea mount (little island in the ocean) forms from an underwater volcano. Birds from the mainland happen to colonize the island and no longer interbreed with the original population due to distance. What type of isolation?
Geographic
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This mechanism of evolution occurs when individuals migrate between populations.
Gene Flow
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Florida panthers used to be more numerous in the Everglades. Today, there are only a few hundred left in the wild due to habitat loss and cars. Numbers are slowly recovering. Which genetic drift is this?