Genetic Drift

A forest fire ignites in the Sam Houston State Forest and kills many members of a population of pigmy rattlesnakes.

• Gene Flow

• Genetic Drift

Select the best answer based on the image.

• Gene Flow

• Genetic Drift

Genetic diversity is decreased through this process.

• Gene Flow

• Genetic Drift

Maria Concepcion Soto settled in the northern area of Venezuela. She suffered from a rare genetic disorder called Huntington’s Disease. As a result, the now 20,000 individuals who live there also have a high risk of Huntington’s Disease.

• Gene Flow

• Genetic Drift

One of the original Amish settlers who founded a new area for them had a rare, genetic disorder which causes short limbs and extra digits. Now, many within the population show this trait.

• Gene Flow

• Genetic Drift

Genetic Diversity is increased through this process.

• Gene Flow

• Genetic Drift

Select the best answer based on the image.

• Gene Flow

• Genetic Drift

The _________________ _________________ occurs when there is a reduction in population due to natural disasters, over hunting or disease.

• founder effect

• gene flow

• bottleneck effect

• genetic drift

In which of the following populations would genetic drift be most likely to cause a rapid evolution of the population?

• The human population of India

• A large population of Mexican free-tailed bats living in central Texas

• A geographically isolated population of 5000 green tree frogs

• A small group of 12 cheetahs living in Namibia

Genetic drift occurs most quickly in -

• small populations.

• populations with large genetic variation.

• populations with small genetic variation.

• large populations.