Study Guide 2-4

Multiple Mendelian Traits

Competencies

1. Explain why one should not use a Punnett square for more crosses involving more than 2 traits.
2. Use the “multiplication rule” (i.e., the definition of independence) to solve simple crosses involving 2 or more traits.
3. Use the “addition rule” (i.e., probabilities of disjoint events) to interpret the results of simple crosses involving 2 or more traits.
4. Use both rules to solve more complicated multi-trait crosses.

Note:

You should be able to use these rules to solve every example in this lecture from memory, along with all exercises in the Mendelian Genetics laboratory.