chapter  3
16 Pages

Primer on Population Genetics

Population genetics deals with changes in genetic variation in a population over time, and how these changes occur. A mutation originally occurs on a single chromosome of an individual and may never be passed on to the next generation. Population genetics answers questions that arise if the mutation is transmitted. Does it reach a detectable frequency in the population? How is that frequency maintained? Is it subject to selection pressure? Studying genetic variations and how they evolve requires a mathematical approach, but the principles can be understood without using advanced mathematics.