Question

1. what does genetic variation contribute to within a species?

a. increased susceptibility to diseases
b. decreased adaptability to environments
c. diversity among individuals
d. uniformity in traits

1. what is the process by which organisms gradually change over time?

a. evolution
b. inheritance
c. natural selection
d. adaptation

1. changes in heritable traits within populations across many, successive, generations

a. genetic drift
b. natural selection
c. evolution
d. gene flow

Explanation:

• For question 16, genetic variation leads to differences in traits among individuals of a species, creating diversity.
• For question 17, evolution is the process of gradual change in organisms over time.
• For question 18, evolution is defined as changes in heritable traits in populations across successive generations.

Answer:

1. c. Diversity among individuals
2. a. Evolution
3. c. Evolution