12.1

Question 1

Natural selection

Answer 1

The process whereby organisms better adapted to their environment tend to survive and produce more offspring.

Question 2

Genetic Drift

Answer 2

A mechanism of evolution that refers to random changes in allele frequencies in a population.

Question 3

Variation

Answer 3

The differences in physical traits of an individual from the group to which it belongs.

Question 4

Fitness

Answer 4

The ability of an organism to survive and reproduce in its environment.

Question 5

Differential reproduction

Answer 5

The concept is that individuals with favorable traits are more likely to reproduce than those without.

Question 6

Adaptation

Answer 6

A trait that helps an organism survive and reproduce in its environment.

Question 7

The five fingers of evolution

Answer 7

A metaphor for the five mechanisms that can cause changes in allele frequencies: population shrinkage, mating, mutation, movement, and adaptation