For a gene with two alleles, if the frequency of one allele is 0.65, the frequency of the other allele is 0.30.
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Inbreeding in certain populations, together with the founder effect, can result in rare phenotypes within the population.
Disruptive selection occurs when phenotypes at both extremes of the phenotypic distribution are selected against.
Was the gene pool of the American population also affected by the gene flow during the Vietnam War? Why or why not?
Bottleneck effect – a population suddenly gets much smaller – allele frequencies of the survivors may be different from those of the original populationFounder effect – a few individuals start a new population – allele frequencies of the founders may be different from allele frequencies of the population they left.
Which of the following statements is true concerning mutations? (1) Mutations are how all new alleles first arise. (2) Mutations create new genetic variation in a gene pool. (3) Only mutations that occur in gametes influence evolution. (4) Mutations really do not have much influence on allele frequencies.
In a population with 100 members, the total number of copies of each gene in the population is _____.
In a population with 100 members, if there are 120 dominant alleles, how many recessive alleles are there?
In a population with 100 members, if 9 individuals have the recessive phenotype, how many individuals are heterozygous?
The _____ shows that allele frequencies do not change in a population if certain conditions are met.