Which of the following DOES NOT alter a [population’s genetic composition? a. random mating b. natural selection c. Inbreeding d. Gene flow from migration e. Genetic drift

In many birds males display to females at perch sites.  Females visit multiple perch sites, watch the displays, and then mate with one of the males.  What type of evolutionary force is acting on male displays? Group of answer choices A. directional (natural) selection B. intersexual selection C. stabilizing (natural) selection D. disruptive (natural) selection E. intrasexual selection

Given that selection cannot favor traits that lower fitness, what might cause a population to move down from a fitness peak in Sewall Wright’s “adaptive landscape”? (Pick one answer)   A. Inverse frequency dependent selection   B. Large population size   C. Overdominant selection   D. Genetic drift   E. All of the above

What is genetic drift? a general changes in gene frequencies that produce no effect b changes in a species due to breeding with other populations c random changes in gene frequency in a population d the effect of mutations as they are passed to offspring

A population occupies heterogeneous environments in which the fitness of some genotypes is higher in one environment and the fitness of other individuals is higher in another environment. This situation is likely to result in a. directional selection. b. stabilizing selection. c. disruptive selection. d. balancing selection.

Which of the following types of selection maintain variation in a population?   a. Overdominance (Heterozygote advantage)   b. Underdominance (Heterozygote disadvantage)   c. Frequency-dependent selection   d. Directional selection   e. Both a. & b.    f. Both a. and c.    g. Both a. and d.

What branch of biology deals with the genetic makeup of populations? A. cytology B. ecology C. Mendelian genetics D. population genetics E. population ecology

The male bower bird builds an elaborate structure (a bower) of sticks and other objects.  He then displays to females in front of the bower.  The bower building behavior is probably the result of ... ? Group of answer choices a. intrasexual selection b. migration c. natural selection d. intersexual selection e. genetic drift

1.A very large population of randomly-mating laboratory mice contains 35% white mice. White coloring is caused by the recessive genotype, "aa". Calculate the frequency of the recessive allele (a). a. 5.9 % b. 17% c. 35% d. 41% e. 48% f. 59% g. 65% h. none of the choices 2. A very large population of randomly-mating laboratory mice contains 35% white mice. White coloring is caused by the recessive genotype, "aa". Calculate the frequency of the dominant allele (A). a. 5.9 % b. 17% c. 35% d. 41% e. 48% f. 59% g. 65% h. none of the choices

Which of the following statements most accurately describes the effects of genetic drift on a population?   a. Populations of the same size will follow the same evolutionary trajectory when evolving due to drift.   b. Genetic drift has the potential to drive evolution in all populations.   c. Allele frequencies in a population of infinite size will ultimately drift to fixation or loss.   d. The loss of otters in California due to excessive hunting cause a founder effect.