600 pts, 300 pts per question, I could not split them up. Human ABC blood type i

Question

600 pts, 300 pts per question, I could not split them up.

Human ABC blood type is determined by three alleles (I^A , I^B , and i) whose gene products modify the H antigen produced by protein activity of an independently assorting H gene. A rare abnormality known as the Bombay phenotype is the result of epistatic interaction between the gene for the ABC blood group and the H gene. Individuals with the Bombay phenotype appear to have blood type C based on the inability of both anti-A antibody and anti-B antibody to detect an antigen. The apparent blood type O in Bombay phenotype is due to the absence of H antigen as a result of homozygous recessive mutations of the H gene. Individuals with the Bombay phenotype have the hh genotype. Use the information above to make predictions about the outcome of the cross shown below: I^A I Hh X I^A I^B hh For this cross, what fraction will have type O blood? Express your answer as a fraction. Example: 1/8 Part B For this cross, [ ] will have type O blood. For this cross, what fraction will have type A blood? For this cross, [ ] will have type A blood.

Explanation / Answer

Part A :- 1/2 will have O blood group

Part B:- 1/2 will have type A blood.

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