1. Review What does incomplete dominance mean and give an example Design an Experiment Design an experiment to determine whether the pink flowers of petunia plants result from incomplete dominance Compare and Contrast What is the difference between incomplete dominance and codominance

2. Ch 11 Introduction to Genetics
11.3 Other Patterns of Inheritance

3. In most organisms, genetics is more complicated, because the majority of genes have more than two alleles
Many important traits are controlled by more than one gene.

4. Incomplete Dominance
Heterozygous phenotype is a blending or mixing of the homozygous phenotypes.

5. Codominance
Both alleles are visible
Speckled fur/feathers.

6. Multiple Alleles
Gene with more than two alleles.

7. Polygenic Traits Traits controlled by two or more genes
Wide range of phenotypes
Skin color.

8. Genes and the Environment
Genes provide a plan for development
Environment plays a role in how the plan unfolds.

9. Western White Butterfly
Spring hatches have more wing pigments than summer hatches
To fly the body temperature needs to be 28–40°C.