Question

1. A single phenotype is favored because individuals with its allele have a higher fitness. What form of natural selection does this describe?

a. disruptive selection
b. sexual selection
c. directional selection
d. stabilizing selection

2. What is disruptive selection?

a. a form of natural selection in which a single average phenotype is favored
b. a form of natural selection in which individuals with extreme representations of a trait are favored over the average
c. a form of natural selection in which a single phenotype is favored because individuals with its allele have a higher fitness
d. a form of natural selection in which all phenotypes are selected to the same extent

3. A single average phenotype is favored.

What form of natural selection does this describe?

a. disruptive selection
b. sexual selection
c. directional selection
d. stabilizing selection

4. Study the histogram.

A line graph showing two peaks, one to the left and one to the right.

What form of natural selection does the histogram show?

a. stabilizing selection
b. sexual selection
c. directional selection
d. disruptive selection

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Answer 1

Stabilizing selection