MENDELIAN PROBLEMS.

1A. The gene for hair color in rabbits has two alleles Q and q. Q is dominant and codes for brown hair. q is recessive and codes for white hair. Write out all the possible genotypes and phenotypes.

1B. Using the above example, fill in the Punnett's Square of offspring genotypes if one parent is heterozygous and the other is white haired. If the pair of rabbits have a litter of 24 babies, write out the expected number of each genotype and phenotype in the table below.

2.A)The gene for plant height in sunflowers has two codominant alleles, T₁ for tall plants and T₂ for short plants. If a tall plant is crossed with a short plant, fill in the table below. 

Take any two of the seedlings from part 2A and cross them. Fill in the results below.

3. In the pedigree below, the shaded symbols represent people affected with a neurological disorder caused by an X-linked recessive allele.  Let’s call the normal allele D and the recessive allele d.  What are the genotypes of every person in this pedigree?