Population Genetics

The term for the formation of new and distinct species over the course of evolution is...

• speciation

• biological species concept

• reproductive barrier

• natural selection

What is genetic drift?

• The movement of genes in/out of a population
• A small, random change in the DNA
• Any change in the allelic frequencies in a population that is due to chance
• ›The process in which humans select for or against particular features in organisms

When has speciation occurred?

• When populations no longer look the same
• When populations no longer have the same frequency of alleles
• When populations are living in different environments
• When populations can no longer interbreed

Which is a mechanism for change in allele frequency?

• gene flow
• genetic drift
• natural selection
• all answers are correct

Which of the following is NOT a condition for Hardy-Weinberg Equilibrium?

• No mutations
• Random Mating
• No natural selection
• No offspring

When a population is in Hardy-Weinberg Equilibrium.  What is not happening to the species?

• Survival
• Reproduction
• Death
• Evolution

What does the Hardy-Weinberg equilibrium measure?

• changes in allele frequencies
• numbers of mutations
• goodness of fit
• genetic diversity

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

• population genetics

• gene pool

• gene flow

• allele frequency

A gene pool consists of

• all of the genes, including all the different alleles, that are present in a population

• some of the genes, including the different alleles, that are present in a population

• all of the genes that are present in all populations

• all of the genes, including all the different alleles, that are present in all populations

The number of times a particular allele appears in a gene pool is known as the

• population of the allele

• relative percentage of the allele

• frequency of the allele

• evolution of the allele