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A man with blood group A niarries a woman with blood group O and their daughter has blood group O. Is this information enough to tell you which of the traits-blood group A or O dominant? Why or why not?

 A man with blood group A niarries a woman with blood group O and their daughter has blood group O. Is this information enough to tell you which of the traits-blood group A or O dominant? Why or why not?

Grade:12

1 Answers

Harshit Singh
askIITians Faculty 5963 Points
one year ago
Dear Student

The given information is not enough to tell us which of the t nits-blood group A or O is dominant In blood heredi, bood type A is always dominant and blood type O is always recessive. Here, father's Blood group can be 1AIA(homozygous) or IAi theterozygous) genotypically, where that of mother is if. For daughter to be born with blood group O, she must receive i type gene one each from father and mother. For this father must have heterozygous IAi blood group and mother must have homozygous blood group ii.

Thanks

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