2.6 - ADAPTATIONS

Question 1

The squinting bush brown butterfly uses its spots as a defense mechanism against predatory birds. During the selection of mates, females will choose against males that have too large or too small eyespots. This reduces the amount of phenotypic variation.

Which type of natural selection selects against extreme phenotypes?

a) The squinting bush brown butterfly reduces phenotypic variation through directional selection.
b) Selection for the most common phenotype is known as stabilizing selection.
c) Selection against extreme phenotypes is known as marginalization.
d) The squinting bush brown butterfly eliminates extreme phenotypes by the mechanism of mutational selection.

Answer 1

Question 2

Which is NOT part of Darwin’s Theory of Evolution?

a) Individuals will have different traits.
b) Not all offspring will survive.
c) Individuals adapt to environmental changes.
d) Individuals will produce and excess number of offspring.

Answer 2