Hardy Weinberg & Microevolution

When organisms are better adapted to their environment they will survive and reproduce more successfully than organisms less adapted. This process is called what?

• Genetic drift

• Natural selection

• Cloning

• Gene flow

In the image shown, only the red bugs have left to begin a new population. What does the image represent?

• Genetic drift (founder effect)

• Genetic drift (bottleneck effect)

• Gene flow

• Natural selection

Genetic drift is associated with populations

• that have a low mutation rate

• in which natural selection is occurring

• that are very small

• that are experiencing changes in their environment

When a population is in Hardy-Weinberg equilibrium,  what is NOT happening to the species?

• Survival

• Reproduction

• Death

• Evolution

Which of these are a mechanisms (causes) of microevolution (changes in allele frequencies)?

• gene flow

• genetic drift

• natural selection

• all answers are correct

Gene flow involves

• Natural disasters killing most of the members of a population

• Individuals moving into and out of the population

• Selective mating

• Small changes because of the environment

A few deer wander out of their native woods into a completely new park where no deer have ever been before. They go on to create an entirely new population. This is an example of

• genetic drift (founder effect)

• natural selection

• non-random mating

• genetic drift (bottleneck effect)

Movement of individuals INTO a population

• immigration

• emigration

Movement of individuals OUT of a population

• immigration

• emigration

When allele frequencies in a population change as a result of random events or chance (and causes the population to shrink), this is called

• immigration

• genetic drift

• gene flow

• sexual selection