1. Introduction to Evolutionary Biology
... that is best fitted. Natural selection is based on competition between which organisms will survive in their environment. The weakest organisms will soon die out and the organisms that carry on the strong genes will pass on in their offspring. This usually happens when an organism is growing ... Genetic drift is the variation of different genotypes in a small population. It may have the chance of disappearance of particular genes as individuals to die out or not able to reproduce. In small populations, the rate of change in allele frequencies is a greater chance than in a larger populat...
- Word Count: 1403
- Approx Pages: 6
- Grade Level: High School