Self-Check 3

Question 1

Evolution is:

Answer 1

Change over time

Question 2

______ is the exchange of alleles between different populations. This process tends to _____ within the populations involved.

Answer 2

Gene flow and increase heterogeneity

Question 3

_____ is evolutionary change as a result of random factors. This process tends to _____ over time.

Answer 3

genetic drift and decrease heterogeneity

Question 4

__________ is the increase or decrease of a specific allele over time, based on reproductive success.

Answer 4

Directional selection

Question 5

_____ is the only evolutionary mechanism that produces completely new alleles.

Answer 5

Mutation

Question 6

______ is the maintenance of multiple alleles because the heterozygous genotype has a reproductive advantage.

Answer 6

Balancing selection

Question 7

In terms of natural selection, fitness is a measure of:

Answer 7

reproductive success

Question 8

Whether a trait has a selective advantage or not depends on the:

Answer 8

Environment

Question 9

_______ occurs when traits become more common over time because they are preferred by potential mates.

Answer 9

Intersexual selection

Question 10

The Hardy Weinberg Equilibrium Equation is used to mathematically identify evolutionary change in a population. In this equation, the p stands for the frequency of the______ while the q stands for the frequency of the

Answer 10

dominant allele and recessive allele

Question 11

Some real-world applications for evolutionary theory include

Answer 11

• advertising and marketing strategies
  -disease prevention and treatments
  -environmental conservation
  -sustainable engineering
  -

Question 12

Gene editing procedures that are applied to reproductive cells and produce heritable changes are called:

Answer 12

Germline modifications

Question 13

According to the 2024 Economist article, what is the greatest challenge facing gene-editing drugs today?

Answer 13

Cost