So far we have examined the inheritance of one trait at a time. In other words, we have examined how purple flowers might be inherited in one problem and how length of stems might be inherited in a second problem. But what if we are interested in two traits at the same time - the chance of inheriting BOTH purple flowers and tall stems - how do we model that cross? In this tutorial you will examine how geneticists model the inheritance of two traits. This type of cross is called a DIHYBRID CROSS. We will also examine the parameters under which this model is effective.

Read and complete page 1 of the Dihybrid Cross assignment.
Watch the Dihybrid Cross Tutorial.
Answers to questions in Tutorial can be reviewed here.

Review and complete page 2-3 of the Dihybrid Cross assignment.
Watch the Dihybrid Cross Tutorial - part 2 .
Answers to the tutorial page can be viewed here.

You are now equipped to complete Part V of the Genetics Problem Set. (Answer Key for Part V can be viewed here.)

* Part V Problem 2 is a little bit different. The video below shows how I would work through a problem such as this.