All Darwin perceived was that selection must work in nature, too.

But the selection works fairly well with the food.

However, a much better explanation immediately offers itself once one considers that natural selection works on genes.

A major strength of the hypothesis is that provides a mechanism by which natural selection could work.

Each exhibition included a different selection works from the series.

Likewise, natural selection works more effectively as populations get bigger.

I believed his selection would work precisely because it didn't have the traditional kind of balance.

But natural selection can also work to improve an animal's ability to protect itself.

The single-tree selection works well with these growth characteristics of both species.

There are several ways balancing selection works to maintain polymorphism.