if the blood group of father is A+ and the blood group of mother is O+ then is it possible that the blood group of child is A- . if yes then state the reason . experts answer it asap
Solution :
The man with blood group A can have genotype either IA IA or IA IO and woman with blood group O will have IO IO genotype.
In the first case, if man has genotype IA IA then the offsprings will have only A blood group. This can be depicted by the following cross:
Parents IA IA x IO IO
Gametes IA IO
Offspring IA IO
So, the offspring will have blood group A.
In the second case, if man has genotype IA IO then the offsprings will have only A and O blood group.
Parents IA IO x IO IO
Gametes IA , IO IO
Offspring IA IO and IO IO
So, the offsprings would have blood group A and blood group O.
Now, + or - blood group depends on the Rh factor. As both parents are Rh+ so the offsprings will also be Rh+.
The man with blood group A can have genotype either IA IA or IA IO and woman with blood group O will have IO IO genotype.
In the first case, if man has genotype IA IA then the offsprings will have only A blood group. This can be depicted by the following cross:
Parents IA IA x IO IO
Gametes IA IO
Offspring IA IO
So, the offspring will have blood group A.
In the second case, if man has genotype IA IO then the offsprings will have only A and O blood group.
Parents IA IO x IO IO
Gametes IA , IO IO
Offspring IA IO and IO IO
So, the offsprings would have blood group A and blood group O.
Now, + or - blood group depends on the Rh factor. As both parents are Rh+ so the offsprings will also be Rh+.
Hence the blood group of progeny cannot be A-