How to do Hardy Weinberg Problems in Biology or AP Biology - SIMPLE

Struggling with Hardy Weinberg? Need a quick refresher on how Hardy Weinberg equations work? What is the point of the Hardy Weinberg Equilibrium?

In this video I'll show you how to do a Hardy Weinberg practice problem for your Biology or AP Biology class.

Use these notes to help you as you follow along with the video:

Hardy Weinberg equilibrium as a model for describing and predicting allele frequencies in non-evolving populations.

Hardy Weinberg represents “ideal” conditions for a population that is not changing. Natural populations DO change, so Hardy Weinberg provides a baseline to gauge the degree of change.

Here are the two Hardy Weinberg Equations:

p + q = 1

p2 + 2pq + q2 = 1

p = frequency of dominant alleles in the population

q = frequency of recessive alleles in the population

p2 = frequency of homozygous dominant genotypes in the population

2pq = frequency of heterozygotes in the population

q2 = frequency of homozygous recessive genotypes in the population


00:00 What is Hardy Weinberg?
00:51 Hardy Weinberg Key
01:39 Practice Problem #1
03:09 Practice Problem #2

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