Homework: UP 40, 41, 44
What we did in class...
We did UP pg. 39 and pg. 43. We learned how to do Incomplete Dominance, Codominance, and Multiple Alleles.
Incomplete Dominance:
*Sample Problem: Cross a red flower with a pink flower.
- Assign letters (R- red W- white RW- pink)
- Determine the parental genotypes. (RR x RW)
- Set up a Punnet Square using the gamete genotypes.
- Combine the gamete genotypes of one parent with those of the other parent to show all possible offspring genotypes.
- Determine the phenotypes of the offspring and state the genotypic and phenotypic ratios.
--- Genotype: 2 RR, 2 RW
--- Phenotype: 2 Red, 2 Pink
Multiple Alleles: 
*Sample Problem: Cross a homozygous for type B blood with a heterozygous for type A blood.
- Assign letters and determine the genotypes of the parents (IBIB x IAi)
- Determine the gamete genotypes produced by each parent (IBIB= IB, IB/IAi= IA, i)
- Set up Punnett square using the gamete genotypes
- Combine parental gametes
- Determine the phenotypic and genotypic ratios of the offspring and answer the question. --- Genotype: 2 IAIB, 2 IBi
--- Phenotype: 2 type AB blood, 2 type B (hybrid) blood
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