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# Using a Punnet Square to determine phenotype and genotype

I need to be able to list the work and list the expected phenotypic ratios for the following crosses:

A. If a red cow is bred with a white bull, all offspring are roan, which have red and white hairs intermixed on the hide. I know this is an example of co-dominance, but what are the results of roan x roan?

B. If solid x spotted = all solid, what will two heterozygous solids produce?

C. heterozygous solid x spotted =

D. AaBb x Aabb=

E. AaBb x aabb=

#### Solution Summary

I use punnet squares to answer the following questions after defining allele, genotype, phenotype, cross, heterozygous, and homozygous.
A. If a red cow is bred with a white bull, all offspring are roan, which have red and white hairs intermixed on the hide. I know this is an example of co-dominance, but what are the results of roan x roan?

B. If solid x spotted = all solid, what will two heterozygous solids produce?

C. heterozygous solid x spotted =

D. AaBb x Aabb=

E. AaBb x aabb=

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