What Is the Founder Effect? — Definition & Examples

A population of birds that you are studying has four alleles of interest. There is a common dominant red allele and a rare recessive blue allele for feather color. There is an equally common codominant set of long and short beak length alleles. Out of this population of birds, a small group fly off on their own and begin living in a different area.

What could you conclude about the allele frequency in this new group of birds?