Hardy-Weinberg Principle Assignment

A dog breed has a pair of alleles that determine curly hair (C) versus straight hair (c). Given allele frequencies of C = 0.1 and c = 0.9, solve the Hardy-Weinberg equation to determine the expected frequencies of individuals in the population having genotypes CC, Cc, and cc. Choose the correct value in each case. Expected frequency of CC genotype:

0.01

Expected frequency of Cc genotype:

0.18

Expected frequency of cc genotype:

0.81

Assuming the size of the population is 110, how many dogs with each genotype would you expect the population to have? Dogs with genotype CC =

1, 1.0

Dogs with genotype Cc =

20, 20.0

Dogs with genotype cc =

89, 89.0

Which allele is increasing in the population?

Allele C

A large forested area has remained relatively untouched for thousands of years. The population of red oak trees has not been subjected to any known diseases or other environmental stresses.

Equilibrium

A group of birds is blown from the mainland to a small island during a storm. They remain there and develop into a new population.

Evolving

A population of humans lives in a secluded community and tends to intermarry within their own group. Occasionally they bring in young people from communities in other areas.

Evolving

In a rain forest, several populations of a monkey species coexist relatively close to each other. Each population has its own range, but mating sometimes occurs between adjacent populations.

Evolving

The data table gives expected and actual numbers of genotypes for three types of dog hair. Answer the questions based on these data. Is this population in Hardy-Weinberg equilibrium?

No

Briefly describe two ways in which the Hardy-Weinberg equation can be used to get information about a population.

The Hardy-Weinberg equation can be used to determine probable frequencies of genotypes in a population. It can also track changes of genotypes from generation to generation

Which of the following did you list in your answer? Check all that apply.

determine expected frequencies of genotypes in a population track changes of genotype frequencies from generation to generation, i.e., determine whether evolution is occurring

A number of conditions are required for a population to be in Hardy-Weinberg equilibrium. Which of the following are correct descriptions of the conditions that must be met? Check all that apply.

no mutations random mating no natural selection