Question

One way to explain why gene frequencies change is that individuals with traits that are adaptive in an environment will stay alive to reproduce. Over generations their genes will become more common. This process describes:
evolution.
natural selection.
sociobiology.
heritability.
Would it be D?

Answer 1

http://dictionary.reference.com/browse/heritability

http://dictionary.reference.com/browse/natural+selection

Answer 2

Thank you, changed my answer to B.

Answer 3

Good! :-)