Evolution

Front

What is disruptive selection?

Back

Disruptive selection is a type of natural selection that favors extreme phenotypes over intermediate phenotypes, leading to two or more contrasting phenotypes in a population.

Front

What are the two examples of genetic drift?

Back

The two examples of genetic drift are the Bottleneck effect and the Founder effect.

Front

What is gene flow?

Back

Gene flow is the transfer of genetic material between populations, occurring when organisms move in (immigrate) or move out (emigrate) from a population.

Front

Which process is NOT a way that populations evolve by random chance?

Back

Natural Selection is NOT a way that populations evolve by random chance; it is a mechanism of adaptive evolution.

Front

What is the ultimate source of genetic variation?

Back

Mutation is the ultimate source of genetic variation, as it introduces new genetic material into a population.

Front

Define natural selection.

Back

Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is the Bottleneck effect?

Back

The Bottleneck effect is a sharp reduction in the size of a population due to environmental events or human activities, leading to a loss of genetic diversity.

Front

What is the Founder effect?

Back

The Founder effect occurs when a small group of individuals establishes a new population, leading to reduced genetic variation compared to the original population.

Front

What is mutation in the context of evolution?

Back

Mutation is a change in the DNA sequence that can lead to new traits in organisms, contributing to genetic diversity.

Front

What is stabilizing selection?

Back

Stabilizing selection is a type of natural selection that favors average phenotypes and reduces variation in a trait.