Choose one sentence that best describes a consequence of genetic drift   a. Alleles in small populations are less likely to become fixed than those in large populations   b. Large populations tend to lose genetic diversity faster than small populations   c. New mutations are equally frequent in large and small populations   d. Small populations tend to lose genetic diversity faster than large populations

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

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

Assume you are studying a population of hummingbirds. You discover that the smallest hummingbirds can't keep their eggs warm and those eggs tend to fail. You also discover the largest hummingbirds tend to accidentally crush their eggs, so those eggs fail. The medium-size hummingbirds therefore have the highest fitness. What type of selection would this result in?   a. Directional selection   b. Sexual selection   c. Disruptive selection   d. Stabilizing selection

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

Antibiotics are commonly used to combat bacterial and fungal infections. During the past several decades, however, antibiotic- resistant strains of microorganisms have become alarmingly prevalent. This resistance has undermined the effectiveness of antibiotics in treating many types of infectious disease. Discuss how the following processes that alter allele frequencies may have contributed to the emergence of antibiotic-resistant strains: A. Random mutation B. Genetic drift C. Natural selection

Antibiotics are commonly used to combat bacterial and fungal infections. During the past several decades, however, antibioticresistant strains of microorganisms have become alarmingly prevalent. This has undermined the effectiveness of antibiotics in treating many types of infectious disease. Discuss how the following processes that alter allele frequencies may have contributed to the emergence of antibiotic-resistant strains: A. Random mutation B. Genetic drift C. Natural selection

60)The figure below shows the average horn size of male big horn sheep in Alberta over a period of 35 years. This population is subject to a legal trophy hunt. Given the available information, what would be the most reasonable evolutionary hypothesis explaining the observed trend? Trophy hunting caused stabilizing selection.   Trophy hunting caused disruptive selection.   Trophy hunting caused frequency dependent selection.   Trophy hunting caused directional selection.

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.