Population genetics

Genetic equilibrium in a population refers to ..

• constant allele frequencies in successive generations

• constant mutation rate in the population

• equal numbers of dominant and recessive alleles

• equal numbers of males and females

The effect that is produced when an insect carries pollen grains from one population to another is called

• gene flow

• random mating

• mutation

• mutation

In a population of 250 rats, calculate the gene pool for length of fur.

• 250

• 500

• 1000

• 125

In a population of 250 rats, the recessive allele frequency of short fur is 0.25. What is the dominant allele frequency in the next generation if the population is considered to be in genetic equilibrium?

• 0.25

• 0.5

• 0.3

• 0.75

In a rat population that is in equilibrium, the frequency of recessive white fur allele is 0.25. Calculate the frequency of the heterozygous rat.

• 0.188

• 0.5

• 0.375

• 0.75

The total collection of genes in a population at any one time.

• population genetics

• gene pool

• gene flow

• allele frequency

When a gene pool of a population changed, it means ...

• number of organims in the population changes

• organisms in the population are breeding randomly

• the population is in genetic equilibrium

• the population is undergoing evolution

p+q = 1

p is

• Frequency of dominant phenotype

• Frequency of dominant genotype

• Frequency of dominant allele

• Frequency of recessive allele

Frequency of dominant phenotype in a population in genetic equilibrium represented by

• p² + 2pq

• p + p²

• 2pq + q²

• 2pq

Frequency of recessive phenotype in a population in genetic equilibrium represented by

• 2pq

• p²

• q²

• q