Allele Frequency Lab Day

Today, we learned how to find allele frequencies and do Hardy-Weinberg Problems, like the one below:

Hardy-Weinberg problems are all about the equation, p^2 + 2pq + q^2. In this equation, p^2 is the homozygous dominant gene, meaning the same dominant gene twice, 2pq is the heterozygous gene, meaning one dominant one recessive gene, and q^2 is the homozygous recessive gene, meaning 2 recessive genes. Homozygous dominant and heterozygous genes will always show the dominant trait. The only way the recessive gene can appear is through the homozygous recessive gene. This is why the recessive gene always stayed alive in the tiger lab, but couldn't appear often enough to drastically affect the tiger population. 

The Bengal tiger lab: 

We then took home a cladogram and evolution quiz: