1. Different Types of Crosses
Incomplete
Codominance
Sex-linked

2. Review: Simple Mendelian Crosses
Monohybrid
Dihybrid

3. Incomplete Dominance Neither allele is dominant.
The heterozygous is a MIX of the two genes.

4. # 1. Heterozygous parents.

5. # 1. Heterozygous parents.

6. Co-dominance Both genes are dominant. The heterozygous is BOTH.
Notice that BOTH letters are
used in upper case!

7. #2. Mother with dominant red scales x with father with dominant yellow scales.
What would a heterozygous child look like?
Oh, this is a snake. 

8. Sex-linked Traits
The gene is located on either a part of the Y or X chromosomes that do not overlap with each other.
Example: Hemophilia

9. Sex-linked Traits
The gene is located on either a part of the Y or X chromosomes that do not overlap with each other.
Example: Hemophilia

10. Incomplete Dominance and Codominance Interactive Website