This is a very detailed PowerPoint of how Meiotic Cell Division and Punnett Squares are related. If you don't mind spending a little extra time teaching these topics then this is a great tool!! Every time I do this lesson I see the light bulbs go on!! : ) Check it out! This activity supports Grade Seven California State Science Standard 2D - Students know plant and animal cells contain many thousands of different genes and typically have two copies of every gene. The two copies (or alleles) of the gene may or may not be identical, and one may be dominant in determining the phenotype while the other is recessive and Grade Seven California State Science Standard 2B - Students know sexual reproduction produces offspring that inherit half their genes from each parent.