Question

Q. 8. A non-haemophilic couple was informed by their doctor that there is possibility of a haemophilic
child being born to them. Draw a checker board and find out the percentage of possibility of such a child
among the progeny.
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Answer 1

Answer:

the gene for haemophilia is present on X chromosome only it means the father is normal and the mother is carrier now we find the possibility then 25% of child will be haemophilic.and it will be boy