Introduction
This tutorial will teach you how to predict the segregation of alleles in the
formation of gametes by parents that are heterozygous for different
characters. Initially you will work with a tool referred to as a Punnett
square, but later you will see how determining probabilities can help you make
the same predictions much more easily.
The learning objectives for this tutorial are that by the end of the tutorial, you should be able to:
- Explain how Mendel's Law of Segregation and Mendel's Law of Independent Assortment are important to understanding genetic crosses
- Solve genetics problems involving the inheritance of two characters (dihybrid crosses)
- Explain why it is more challenging to use a Punnett square as the number of characters increases
- Solve genetics problems using the Rule of Multiplication and the Rule of Addition to determine the probability of expected genotypes and phenotypes