Chapter 8. 8·5–8·10 Four mechanisms can give rise to evolution.

Show What You Know - Self Quiz
true
true
You must read each slide, and complete any questions on the slide, in sequence.

Instructions

Check your understanding of concepts from 8·5–8·10 Four mechanisms can give rise to evolution by answering the following questions.

1.

1. If evolution has occurred:

A.
B.
C.
D.
E.

Correct. (See section 8·5 Evolution occurs when the allele frequencies in a population change.)
Incorrect. (See section 8·5 Evolution occurs when the allele frequencies in a population change.)

2.

2. The origin of all genetic variation is:

A.
B.
C.
D.
E.

Correct. (See section 8·6 Mutation—a direct change in the DNA of an individual—is the ultimate source of all genetic variation.)
Incorrect. (See section 8·6 Mutation—a direct change in the DNA of an individual—is the ultimate source of all genetic variation.)

3.

3. In a given population, a few individuals may, by random chance, leave behind more descendants than other individuals. Thus, the genes of the following generation will have a higher proportion of the alleles of the “lucky” individuals. Which of the following concepts is this example representative of?

A.
B.
C.
D.
E.

Correct. (See section 8·7 Genetic drift is a random change in allele frequencies in a population.)
Incorrect. (See section 8·7 Genetic drift is a random change in allele frequencies in a population.)

4.

4. ___________ can result from many processes, including ___________ and __________.

A.
B.
C.
D.
E.

Correct. (See section 8·5 Evolution occurs when the allele frequencies in a population change.)
Incorrect. (See section 8·5 Evolution occurs when the allele frequencies in a population change.)

5.

5. Which of the following statements is NOT consistent with evolution by natural selection?

A.
B.
C.
D.
E.

Correct. (See section 8·9 When three simple conditions are satisfied, evolution by natural selection is occurring.)
Incorrect. (See section 8·9 When three simple conditions are satisfied, evolution by natural selection is occurring.)

Activity results are being submitted...