Unit 7 Quiz 2 Part 3

Question 1

What is genetic variation within a population?

Answer 1

Individuals within a population are genetically varied

Genetic variation refers to the differences in DNA among individuals within a species.

Question 2

How does high genetic variation affect a population’s persistence?

Answer 2

Populations with high genetic variation are more likely to persist through environmental disturbances

High genetic variation allows for a greater range of adaptive traits within a population.

Question 3

What are environmental disturbances?

Answer 3

Events that increase selective pressure on populations in an ecosystem and likely increase mortality

Examples include natural disasters, climate change, and human activities.

Question 4

What is the impact of low genetic variation on a population’s adaptability?

Answer 4

Populations with little variation are less likely to possess an adaptive feature that increases reproductive success when a disturbance arises

Lack of genetic diversity can hinder a population’s ability to adapt to changing environments.

Question 5

Populations with ___ genetic diversity are at a great risk of extinction

Answer 5

Less

Question 6

If selective pressures change a formerly adaptive allele may become __ ____

Answer 6

Deleterious or vise versa