Genetics Unit – Lesson 8

For the Lesson 8, the final lesson in the Genetics Unit, we learned about the “Levels of Heredity” and then how to make dihybrid crosses.  A dihybrid cross is a Punnett Square that shows the possible inheritance patterns of two independently-assorting genes.  The classwork for this lesson included a dihybrid cross (two-trait Punnett Square) worksheet and a reading with questions about the connection between Down Syndrome and Alzheimer’s Disease.

We will have our second quiz for the Genetics Unit on Friday, so study hard!  Be sure to review Lessons 5-8, focusing on mitosis and meiosis, vocabulary (allele, genotype, phenotype, dominant, recessive, homozygous, heterozygous) and know how to make and analyze one- and two-trait Punnett Squares.