Exam 17: Processes of Evolution

MATCHING Matching.Choose the most appropriate letter for each. a.a reference point that implies stability of gene frequencies through generations b.encompasses all of those actually or potentially interbreeding populations that are reproductively isolated from other such groups c.the genes of an entire population d.the frequency of homozygous dominants in a population e.the frequencies of dominant and recessive alleles in a population f.the frequency of heterozygotes in a population g.the frequency of homozygous recessives in a population h.heterozygote advantage in regions where malaria is found i.pesticide-resistant pests -gene pool

Allopatric speciation requires

When a population goes through a bottleneck,

The persistence of the sickle-cell anemia allele in the African population is the result of

-If the frequency of expression of a recessive trait in a population is 16 percent, the frequency of the recessive allele is what percent?

__________ can lead to the loss of genetic diversity.

Mutations are the original source of new alleles, but many are __________ or __________.

Which of the following is a type of postzygotic reproductive isolating mechanism?

Adaptive radiation would be described by:

Postzygotic reproductive isolation occurs

Balanced polymorphism is a type of

Classification.For the following statements select the best choice of the four evolutionary processes listed below. a.mutation b.gene flow c.genetic drift d.natural selection -The reduced contribution of one phenotype in comparison to another to the next generation is an example of this.

Classification.For the following statements select the best choice of the four evolutionary processes listed below. a.mutation b.gene flow c.genetic drift d.natural selection -This process can rapidly offset the effects of genetic isolation when two populations come into secondary contact.

All EXCEPT which of the following events shuffles existing alleles into different combinations in sexually reproducing organisms?

Which of the following is(are) a group of individuals of the same species that occupies a specified area?

Which of the statements below is true about warfarin?

A species consists of individuals that are characterized by all of the following EXCEPT

Speciation occurs

Selection pressures acting on a population may favor

Genetic equilibrium and allele frequencies are maintained by all EXCEPT which one of the following?