why a child 's blood group is different from his parents?
Nikki57:
i think that the child blood grp matches with one parent either with mom or dad.
Not necessarily..
It depends what blood group of two parents is
Ask any question giving blood group of two person either of two parents and ask what will be blood group of child
Or give blood group of a child and it's one parent (say of father ) and ask blood group of mother ?
It helps in disputes when two ladies claim that the child is of her...by blood group dispute can be resolved
If blood group of father is AB and that of mother is O:- Blood group of child can not be AB or O
In above-mentioned case if a lady of A or B blood group claims for the baby---she will be arrested
ok
Answers
Answered by
3
. Our red blood cells (and some tissues) have got chemical substances called antigens on their surface and the ability to form these antigens is governed by genes inherited from parents. The pattern of genes we have is called genotype and the form in which it is expressed is called phenotype. It is the genotype (genetic make-up) which decides what the blood group (phenotype) will be.
In the ABO system there are three alleles (one member of a pair or series of genes that occupy a specific position on a specific chromosome): Ia - producing the antigen A, Ib - producing the antigen B and Io - producing neither antigen. IA and IB are co-dominant i.e. if both alleles are present, both antigens (A and B) will be formed on the surfaces of red blood cells and the individual will have blood group AB. Io is recessive and produces neither antigen and thus an individual will have blood group O if two of these alleles are present. The genotypic make-up can have 6 possibilities resulting in the following phenotypes:
Ia Ib - AB, Ia Ia - A, Ia Io - A, Ib Ib - B, Ib Io - B, and Io Io – O
Blood group of parents Blood group of child
A and A A, O
A and B A, B, AB, O
A and AB A, B, AB
A and O A, O
B and B B, O
B and AB A, B, AB
B and O B, O
AB and AB A, B, AB
AB and O
A, B
O and O O
However, my advice to you would be to get the blood groups of the parents and the children re-tested at a reliable, quality-assured lab before speculating or jumping to any conclusion.
In the ABO system there are three alleles (one member of a pair or series of genes that occupy a specific position on a specific chromosome): Ia - producing the antigen A, Ib - producing the antigen B and Io - producing neither antigen. IA and IB are co-dominant i.e. if both alleles are present, both antigens (A and B) will be formed on the surfaces of red blood cells and the individual will have blood group AB. Io is recessive and produces neither antigen and thus an individual will have blood group O if two of these alleles are present. The genotypic make-up can have 6 possibilities resulting in the following phenotypes:
Ia Ib - AB, Ia Ia - A, Ia Io - A, Ib Ib - B, Ib Io - B, and Io Io – O
Blood group of parents Blood group of child
A and A A, O
A and B A, B, AB, O
A and AB A, B, AB
A and O A, O
B and B B, O
B and AB A, B, AB
B and O B, O
AB and AB A, B, AB
AB and O
A, B
O and O O
However, my advice to you would be to get the blood groups of the parents and the children re-tested at a reliable, quality-assured lab before speculating or jumping to any conclusion.
There are many Permutations and combinations.. You have tried your best to provide suitable answer as per the question and all are correct.. Well done.. Appreciable
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0
A child's blood group may or may not be different from his parents. There are four blood groups--A,B,AB and O.
.If one parent is of blood group AB and other parent is of blood group O :- first parent will either give gamete carrying A or B and second parent will give gamete carrying O :- Then child will be either of A or B blood group---different from his either parent....hope it helps.
.If one parent is of blood group AB and other parent is of blood group O :- first parent will either give gamete carrying A or B and second parent will give gamete carrying O :- Then child will be either of A or B blood group---different from his either parent....hope it helps.
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