Exam 12: Forces of Evolutionary Change

Use the Hardy-Weinberg equations: p + q = 1 and p² + 2pq + q² = 1.If the dominant allele frequency is 0.8,what percent of the population will be homozygous dominant?

Small,generation-by-generation changes to a population's gene pool is

Individuals,who have one normal allele and one sickle cell allele,are able to resist malaria.This gives them a better chance of reaching reproductive age.This is known as

The mode of natural selection in which two or more extreme phenotypes are fitter than the intermediate phenotype is

Evolution occurs

Which type of genetic drift occurs when many members of a population die,resulting in a great loss of genetic diversity?

Darwin believed that because of "differential reproductive success" a population would change over time.

Natural populations usually fulfill the conditions needed for Hardy-Weinberg equilibrium.

The mode of natural selection in which extreme phenotypes are less fit than the optimal intermediate phenotype is

Sexual selection is a type of natural selection resulting from variation in the ability to obtain mates.

The hundreds of dog breeds are a product of natural selection.

Use the Hardy-Weinberg equations: p + q = 1 and p² + 2pq + q² = 1.If the dominant allele frequency is 0.8,what percentage of the population will be heterozygous?

The founder effect occurs when

The entire collection of genes and alleles is a population's

Evolution occurs in individuals,not populations.

A male peacock has enormous tail feathers that it uses in mating displays to attract females.While the tail feathers are an advantage in mating,what is the potential disadvantage of these feathers to the male?

Evolution answers the question of how life began.

Hardy-Weinberg equilibrium will not occur in a population in which

In an evolutionary sense,"fitness" refers to an organism's contribution to the next generation's gene pool.

Farmers and horticulturalists bred broccoli,cauliflower,kale,and cabbage from the wild mustard plant through