Problem # 1 is taken from Campbell Chapter 14 self quiz problems.

1.    The pedigree below traces the inheritance of alkaptonuria, a biochemical disorder. Affected individuals, indicated here by the filled-in circles and squares, are unable to break down a substance called alkapton, which colors the urine and stains body tissues. Does alkaptonuria appear to be caused by a dominant or recessive allele? Fill in the genotypes of the individuals whose genotypes you know.  What genotypes are possible for each of the other individuals?

2.  Tom P. Son faces charges in a paternity suit brought by Mary H. Lamb.  Tom is blood type AB, 
     Ms. Lamb is blood type O.   The child is blood type O.  Could Tom be the Father?  Explain using 
     keyed and labeled crosses.

3.  Two individuals of homozygous type A and homozygous type B marry and have offspring.
     (a.) Describe the offspring in the first filial generation.
     (b.) Describe the second filial generation offspring of this cross.

4.  A child has a blood type of AB, and the mother has a blood type of A.
     (a.) What are the possible genotypes of the father?
     (b.) Could the father be type O?  Explain!!

5.   A carrier female for hemophilia mates repeatedly with a hemophiliac male.   
      Show most probable ratios of the offspring produced.

6.   Show the results of a cross between a red-green colorblind female and a normal male.

7.    Explain why red-green colorblindness is relatively uncommon in females, but common in males.