Academic Evolution Extra Credit

What is genetic drift?

• the changes in allele frequencies (genes) ,in a population, happening due to random events/circumstances.

• It is an example of primary succession

• Genetic drift are different organisms in a population due to inherited traits from their parents

• It is part of symbiotic relationships such as mutualism, commensalism, parasitism

Genetic drift is change in the allele frequency of a population due to...

• random chance
• natural selection
• non-random mating (sexual selection)
• artificial selection

Where the better adapted organisms survive to pass traits along to offspring.

• Evolution
• Natural Selection
• Extinction
• Artifical Selection

What will natural selection do to the frequency of a gene that is selected for?

• Increase the frequency

• Decrease the frequency

Select the best answer based on the image.

• Gene Flow

• Genetic Drift

A population of flowers on one side of a river transports pollen to flowers on the other side of the river

• Gene Flow

• Genetic Drift

This mechanism of evolution occurs when populations migrate.

• Extinction
• Gene flow
• Genetic drift
• Natural Selection

Adding new alleles to a population will...

• Increase the genetic variation

• Decrease the genetic variation

Natural selection results in change in a population's _____________ traits over time.

• inherited

• acquired

A phenotype that improves an organism’s chance of survival in their environment is considered a(n) ____________.

• natural selection

• adaption

• speciation