Natural Selection

Question 1

What is natural selection?

Answer 1

Natural selection is the differential survival and reproduction of individuals due to differences in phenotype.

Question 2

Evidence for natural selection:

Answer 2

Before the industrial revolution in Britain, most peppered moths were of the pale variety. This meant that they were camouflaged against the pale birch trees that they rest on.

Question 3

Natural selection theory:

Answer 3

Darwin’s Theory of Evolution by Natural Selection. More individuals are produced each generation that can survive. Phenotypic variation exists among individuals and the variation is heritable.

Question 4

Example of natural selection:

Answer 4

For example, treefrogs are sometimes eaten by snakes and birds.