The document discusses codominance and incomplete dominance in cow color and snapdragon flower color. For cow color, alleles for red and white are codominant and produce a roan phenotype. Crossing different genotype cows can produce offspring with red, white, or roan phenotypes. For snapdragon flowers, alleles for red and white exhibit incomplete dominance and the hybrid phenotype is pink.

1. CODOMINANCE & INCOMPLETE DOMINANCE

2. CODOMINANCE & INCOMPLETE DOMINANCE Cow colour comes from alleles that are codominant… C R C W C R C W + “ red” “ white” “ roan”

3. CODOMINANCE & INCOMPLETE DOMINANCE What are the genotypes and phenotypes of the following cows? C W C W C R C R C R C W

4. CODOMINANCE & INCOMPLETE DOMINANCE What would happen if you mate the following cows? C R C R C R C W x

5. CODOMINANCE & INCOMPLETE DOMINANCE What would happen if you mate the following cows? C R C R C R C W C R C R C R C W C R C R C R C W F1 Genotypes: 1 C R C R : 1 C R C W F1 Phenotypes: 1 red : 1 roan z

6. CODOMINANCE & INCOMPLETE DOMINANCE What would happen if you mate the following cows? C R C W C R C W C R C W C R C W F1 Genotypes: All C R C W F1 Phenotypes: All 1 roan C R C W C R C W z

7. CODOMINANCE & INCOMPLETE DOMINANCE Snapdragon flower colour comes from alleles that are incompletely dominant… F F’ F F’ + “ red” “ white” “ pink”

8. CODOMINANCE & INCOMPLETE DOMINANCE What are the genotypes and phenotypes of the following snapdragon flowers? FF F’F’ F F’

9. CODOMINANCE & INCOMPLETE DOMINANCE What would happen if you cross the following flowers? FF F’F’ Mon cherie! My, what soft petals you have!

10. CODOMINANCE & INCOMPLETE DOMINANCE F F’ F F’ F1 Genotypes: All F F’ F1 Phenotypes: All pink What would happen if you cross the following flowers? F F’ F F’ F F’ F F’ z