Number of Barr bodies in humanfemale is(1) 1 (2) 2(3) 3 (4) 4Previous Year’s QuestionA child of O-group has B-groupfather. The genotype of fatherwill be(1) IOIO (2) I BIB(3) I AIB (4) IB IO
Question
Number of Barr bodies in humanfemale is(1) 1 (2) 2(3) 3 (4) 4Previous Year’s QuestionA child of O-group has B-groupfather. The genotype of fatherwill be(1) IOIO (2) I BIB(3) I AIB (4) IB IO
Solution
The number of Barr bodies in a human female is 1. This is because Barr bodies are inactive X chromosomes in a cell. Females have two X chromosomes and one of them is inactivated during embryonic development, which forms the Barr body.
For the second question, a child of O-group has a B-group father. The genotype of the father will be IB IO. This is because the O blood group is recessive, so the child must have received an O allele from both parents. Since the father is B group, his genotype must be IB IO, meaning he carries one B allele (which determines his blood type) and one O allele (which he passed on to his child).
Similar Questions
A child of O-group has B-groupfather. The genotype of fatherwill be(1) IOIO (2) I BIB(3) I AIB (4) IB IO
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