Don't lose your points!
Sign up and save them.
+
Dihybrid Crosses

Dihybrid Crosses

Description:

Students will complete a dihybrid genetic cross.

(more)
See More
Fast, Free College Credit

Developing Effective Teams

Let's Ride
*No strings attached. This college course is 100% free and is worth 1 semester credit.

28 Sophia partners guarantee credit transfer.

263 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 25 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial

Dihybrid and Multi-trait Crosses

Source: Created by Chris McCarter using Camtasia

Put into your notes:

1.  Complete the dihybrid square from the video.

2.  What is the phenotypic ratio that results?

3.  Try this one for practice:  two pea plant parents that are heterozygous for purple flower color and for tallness.  Do the Punnett square and the phenotypic ratios.

4.  How would the results differ if you crossed these parents:  PPTt  x  pptt?  Try it.

5.  Challenge:  try the trihybrid square.  How many different alleles would there be and how many squares do need in the Punnett square?