Florida International University PCB evolution Chapter 9 1)Migration constitutes an important evolutionary force because it                        allelic frequencies across generations, eventually leading to the                             of the population

Florida International University

PCB evolution

Chapter 9

1)Migration constitutes an important evolutionary force because it                        allelic frequencies across generations, eventually leading to the                             of the population.

1. changes/fixation.
2. changes/homogenization.
3. changes/divergence.
4. fixes/extinction.

2. The consequences of random genetic drift on populations are best studied using       as model systems.

1. Drosophila populations.
2. Founding effects
3. Adaptive effects
4. Heterozygotes.

3. Inbreeding is a type of             that affects evolution          because it             allele frequencies.

1. Nonrandom mating/indirectly/does not change.
2. Nonrandom mating/indirectly/decreases.
3. Nonrandom mating/directly/changes.
4. Nonrandom mating/indirectly/increases

4. In absence of selection, the probability of fixation of a neutral allele in the population is         .

1. Equal to the frequency of that allele in the population as long as the population consists of a finite number of alleles.
2. Equal to the frequency of that allele in the population.
3. Equal to the frequency of that allele in the population as long as the population consists of a finite number of individuals.
4. Equal to the frequency of that allele in the population as long as the population consists of an infinite number of individuals.

5. From a population genetics perspective, migration is mostly interested in        .

1. the movement of alleles across individuals.
2. the movement of alleles between populations.
3. the changes in allele frequencies across populations.
4. the movement of individuals between populations.

6. The main consequences of genetic drift are          .

1. unique evolutionary paths in populations, drastic effect on small populations and important effects on large populations after enough time.
2. unique evolutionary paths in populations, random fixation of alleles and decrease in heterozygosity.
3. random fixation of alleles and decrease in heterozygosity.
4. unique evolutionary paths in populations and important effects on large populations after enough time.