In a population of chimps, a gene that controls the presence or absence of an extra digit on forelimbs is in Hardy-Weinberg equilibrium.  This gene has two alleles (D1 and D2), and 40% of the gametes in the chimp population carry the D1 allele. Given this information, what is the percentage of chimps that carry both the D1 and D2 alleles? a.16% b.48% c.60% d.40% e.36%

High values for heterozygosity (or expected heterozygosity) at a genetic locus in a population indicates that there is:   a. A lot of genetic variation   b. Little genetic variation   c. A population not under HW equilibrium   d. A large amount of homozygosity

About 70 percent of all Caucasians can taste the chemical phenylthiocarbamide, and the remainder cannot. The ability to taste this chemical is determined by the dominant allele T, and the inability to taste is determined by the recessive allele t. If the population is assumed to be in Hardy-Weinberg equilibrium, what is the heterozygotes frequency in this population? a. 0.7 b. 0.4 c. 0.2 d. 0.5

If two populations of Lake Erie Water Snakes had a fixation index (FST) of 0.055, and the snakes stopped swimming among their separate populations due to high risk of round goby predation, what would you expect to happen over time?   a. reduced FST   b. genetic homogeneity   c. elevated mortality   d. increased FST   e. hybrid breakdown

A population has 300 individuals and 1/3 are recessive.  If 100 individuals are heterozygous is the population in HW equilibrium?   a. Sweet potato   b. cannot be determined   c. no    d. yes

If the frequency of allele 1 is 0.8 and the frequency of allele 2 is 0.2 what is the expected frequency of heterozygotes under Hardy Weinberg? Group of answer choices A. 0.32 B. 0.8 C. 0.2 D. 0.16

6) If a sudden frost kills many small birds in a population, but only a few medium- and large-sized ones, which type of selection is likely operating? a.Intersexual b.Directional c.Disruptive d.Stabilizing

We observe disruptive selection when the extreme values of a trait such as light and dark coat colors are selected for instead of a medium coat color? A. true  b. False

Hardy Weinberg equilibrium (HWE) describes a situation in which the relative frequencies of alleles do not change over generations. which of the following could prevent HWE from being maintained? A. New mutations B. All individuals reproducing equally C. Random mating D. No individuals entering the population

Suppose a population of mice is subject to a few years of very cold, dry winters that drastically decreases their numbers. After the decrease in population size, there was a population of 200 mice, with 182 showing the dominant long tail phenotype and 18 showing the recessive short tail phenotype. a. What is the frequency of the recessive allele? b. What is the frequency of the dominant allele?