Question

In some bees, thin stripes (S) are dominant over thick stripes (s) and black eyes (B) are dominant over gray eyes (b). Complete a dihybrid cross for parents with the genotypes: SsBB x ssBb and answer the following in complete sentences. (5 points)

1. Describe how you would set up a Punnett square for this cross.
2. List the likelihood of each possible offspring genotype.
3. List the likelihood of each possible offspring phenotype

Answer 1

1. Use a 2X2 Punnett square to solve this problem

2. It would be 1/4 SsBB, 1/4 SsBb, 1/4 ssBb and 1/4 ssbb

3. 50% chance they will be thin black, 25% chance they will be thick black, and 25% chance they will be thick gray.

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Answer 2

make it to where both dominate are on a side then non dominate on a side. Then, combined them together.