Concept #1: Natural Selection

Concept #2: New Alleles and Migration

Concept #4: Non-Random Mating

Practice: Which of the following terms describes a change in allelic frequency due to random disappearance of genes in a small population?

Practice: A group of finches live on a small, isolate island. One day, a few finches travel to a distant island and start a new population of finches. This type of change in a population is called what?

Practice: Which of the following is an example of natural selection?