Gregor Mendel & Punnett Squares

The following video clip reviews how to create and fill out Punnett squares. Now we like to use letters that represent what we are looking at and they should always be the same for dominant and recessive. When we write heterozygous allele pairs, they should always have the dominant allele written first.

If you want to go a little furthur and review some of the concepts from today (before we make it more complicated next class) watch the following lesson.

Genetics Practice Problems

The following websites have some practice problems covering all types of genetics.

http://www.cpo.com/tn/downloads/LSN_Skillsheet_11_2C.pdf
http://biology.clc.uc.edu/courses/bio105/geneprob.htm

The second half of the second page we have not covered all of and some of it we will not cover, so keep that in mind.