Activity

1. Draw a 4 square monohybrid cross. What are some things to remember when completing a monohybrid cross?

2. List out the steps to completing a dihybrid cross.

1. Draw a 16 square box.

2. Identify _________________________________ of ___________________________parents.

3. ____________________________ both parents and put in punnet square.

4. ________________________________________________ and evaluate phenotype probability.

Check Your Understanding

1. There are 2 alleles for the crest characteristic in pigeons: no crest and crest. Crest is recessive. Use a Punnett square to calculate the probability of the offspring of 2 heterozygous parents.

2. Explain why males are more likely to have a sex linked disorder than females.

3. Complete a dihybrid cross for a black haired, floppy eared male with the genotype BBee and a brown haired, long eared female with the genotype bbEe. Determine the probability of each phenotype.