Question

1. The situation in which alle frequencies in the gene pool of a population remain constant is called
(a)evolution
(b)genetic drift
(c)genetic equilibirium
(d)natural selection
2.The type of genetic drift that follows the colonization of a new habitat by a small group of individuals is called
(a)the Hardy-Weinberg principle
(b)the founder effect
(c)directional selection
(d)stabilizing selection

Answer 1

3.One similarity between natural selection and genetic drift is that both events
(a)are based completely on chance
(b)begin with one or more mutations
(c)involve a change in a population's allele frequencies
(d)take place only in very small groups
4.A farmer sprays insecticide on his crops to kill unwanted insects. Most of the insects die, and the chemicals have the effect of damaging the DNA of the insects that are not killed. Which of these has happened?
(a)Sexual selection among the insects has changed the gene pool
(b)Genetic equilibrium has been maintained
(c)Mutations have arisen that may have altered allele frequencies
(d)Individuals with new genes have immigrated into the population
5.Genetic drift tends to occur in populations that
(a)are very large
(b)are small
(c)are formed from new species
(d)have unchanging allele frequencies
6.One of the conditions required to maintain genetic equilibrium is
(a) natural selection
(b) mutations
(c) nonrandom mating
(d) no immigration or emigration
7.In a certain population of 100 individuals, one fourth of the individuals have the genotype AA, half have the genotype Aa, and one fourth have the genotype aa. One day, 10 individuals with the genotype aa leave the area and cross a river into a new habitat. Which of these processes has changed the population's gene pool?
(a)non random mating
(b)immigration
(c) emigration
(d)natural selection
8.According to the Hardy-Weinberg principle, genetic equilibrium would be more likely in a population of mice if
(a)the population size rapidly decreases
(b)mutation rates within the population rise
(c)no natural selection takes place
(d)there is frequent movement into and out of the population
9.Which factor would most likely disrupt genetic equilibrium in a large population?
(a)the production of large numbers of offspring
(b)mating that is not random
(c)the absence of the emigration and immigration
(d)the absence of the mutations
10.In one generation, the frequency of the A allele is 70 percent and the frequency of the a allele is 30 percent. What are the chances of an individual in the next generation having the genotype aa if the population is in genetic equilibrium?
(a)49%
(b)42%
(c)30%
(d)9%

Answer 2

umm, how about no

Answer 3

post them seperatly

Answer 4

Ok I did. Will you help me now? @shadeyghost