Genetic Problem?

Question

A man sues his wife on grounds of infidelity! He is basing his claim on the fact that his son has type O blood. He has type O but his wife has type A. Can he base his suit on this fact? Why or why not?

This is from Biology..and I don't understand this problem...

Answer 1

His son has Type O. Son's genes must be OO because O is recessive to both A and B.

Dad has Type O. He is also OO.

Wife is Type A. She can have either AA alleles or AO. AA doesn't allow her to have Type O child, but AO does.

So: Parents OO and AO
Child OO

No problems genetically. It's all possible.

Answer 2

Actually in biology type O blood means the absence of type A or B markers. A lot of the time, they use "i" instead of O in these problems. If the father had type O blood (ii) and his wife had type A blood, (either 2 A markers AA or 1 A marker, Ai) all of their children would have to be ii or Ai.

The Punnet Squares could be:

_____A____A
__i__Ai____Ai
__i__Ai____Ai

or

_____A___i
__i__Ai___ii
__i__Ai___ii

Answer 3

if he has type O blood and his wife has type A,it is not posibble that his son has type O.it is because human blood have genotypes AA, AO, BB, BO, AB and OO. so if the father has genotype OO and his wife is AO. the probility blood genotype for his son are AO or OO. but if the father has genotype OO and his wife is AA. his son must have an AO blood type which is A blood type as, A is dominant over O. are you clear with my statement? or still confusing........

Answer 4

How can he sue his wife? If anything, it would be the maternity which could be in doubt (if the women was AA, for example, she couldn't be the mother) but the mother gave birth to the baby so no doubt there.....

What about the Rh factor, anyway?

Answer 5

yes but only if his wifes parents did not have type O blood