Exam 12: Processes of Evolution

Which of the following is NOT a condition of genetic equilibrium in a population?

Considering two species of birds, which of the following is a derived character?

Which of the following has led to the extinction of most of the Hawaiian honeycreeper species?

Over evolutionary time, flowering plants have evolved colors, odors, and nectar that attract pollinating insects and the insects have evolved mechanisms that detect the changes in plants and to better collect pollen. This is an example of

With the use of effective vaccines, polio has become a very rare disease and far fewer people get polio than once did. This is an example of ____ selection

A physical barrier that separates a population in half and that leads to the evolution of a new species is called

Two species of toads have been successfully interbred in a laboratory but do not hybridize in nature because one species mates in summer and the other mates in the fall. This is an example of ____ isolation.

Which of the following is NOT an example of gene flow?

If the allele frequency of a population of ducks changes from one generation to the next, the population is undergoing

Which of the following is an example of the result of a beneficial mutation?

The study of the evolutionary history of species is called

Considering alligators and birds, which of the following is a derived character?

Peahens prefer to mate with peacocks that have the brightest and largest tail displays. The peacock's tail is, in and of itself, a disadvantage to the males. It is large and cumbersome and the males are more easily caught by predators because of it. Given these facts, why isn't the peacock's tail selected against by natural selection?

____ is a random change in allele frequency over time that is brought about by chance.

Many male birds will expend a great deal of energy building nests. Females will mate with the males who build the best nests. This is best described as an example of

____ refer(s) to an allele's abundance within a population.

Predator hunting tactics and prey defense mechanisms are examples of

Male songbirds sing to attract females to mate with. Different species of male songbirds sing different songs that will attract only the females of their species. This is an example of ___ isolation.

Traditional taxonomy differs in what way or ways from cladistics?

If a population is experiencing genetic equilibrium it is not