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16 Cards in this Set

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What is a gene pool?
The different alleles in a population.
What is a relative frequency?
The number of an organism in a population.
What is a single-gene trait?
Two or three phenotypes.
What is a polygenic trait?
Have many possible genotypes.
What is a directional selection?
An individual at one end of the curve having higher fitness.
What is a stabilizing selection?
When the animal near the center of the bell curve has an higher fitness.
What is a disruptive selection?
The average type have a harder time surviving and reproducing.
What is a genetic drift?
A random change in the frequency of the alleles in a gene pool.
What is a founder effect?
A change in allele frequency that results from a small group.
What is a Hardy-Weinberg principle?
That all alleles frequencies in a population will stay in genetic equilibrium unless something causes them to change.
What is a genetic equilibrium?
When every organism aren't different and they're equally matched.
What is a speciation?
The formation of a new specie.
What is a reproductive isolation?
The mix of a organism, and the youngling grows up with different genes.
What is a behavioral isolation?
Two interbreeding populations developing different behaviors.
What is a geographical isolation?
Seperated by a barrier, such as a river, mountain, or ocean.
What is a temporal isolation?
Populations that live in the same habitat reproduce at different times.