Natural Selection,Gene Flow,Genetic Drift

Front

What is Natural Selection?

Back

Natural Selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring. It is a key mechanism of evolution.

Front

Define Gene Flow.

Back

Gene Flow is the transfer of genetic material between populations through migration, which can introduce new genetic variations.

Front

What is Genetic Drift?

Back

Genetic Drift is a mechanism of evolution that refers to random changes in the frequency of alleles in a population, often having a more significant effect in small populations.

Front

What is the Bottleneck Effect?

Back

The Bottleneck Effect occurs when a population's size is significantly reduced for at least one generation, leading to a loss of genetic diversity.

Front

Give an example of the Bottleneck Effect.

Back

An example of the Bottleneck Effect is when Bald Eagles were hunted to near extinction, but the population recovered.

Front

What is Variation in the context of evolution?

Back

Variation refers to the differences in traits among individuals in a population, which can affect their survival and reproduction.

Front

What is the role of migration in Gene Flow?

Back

Migration allows individuals to move between populations, facilitating the exchange of genetic material and increasing genetic diversity.

Front

What is an example of Natural Selection?

Back

An example of Natural Selection is male birds developing colorful feathers to attract female mates, leading to higher reproductive success.

Front

What is NOT an example of Natural Selection?

Back

People selectively breeding hamsters is NOT an example of Natural Selection; it is an example of artificial selection.

Front

How does Genetic Drift differ from Natural Selection?

Back

Genetic Drift is a random process that can lead to changes in allele frequencies, while Natural Selection is a non-random process that favors traits that enhance survival and reproduction.