If a child has blood type B and its mother has type A could a man with type O be the father?

Answer 1

Yes.

If the father has blood group AB, he has one copy of the group A gene (symbol IA), and one of the B gene (IB).

Mother, being group A, must have at least one copy of the IA gene. She must have the genotype IAi, where i is a recessive gene. [Someone with two copies (ii) has blood group O.]

So the child received an IB gene from Dad, and an i gene from Mum. The child must have the genotype IBi, which produces blood group B.

Answer 2

hi i wrote this question and i really need to know the answer please. If you know the answer thank you. :) no one parent would have to have type b, or someone else in the family must have type b

Answer 3

it depends on the mother blood type. in genetic there is such terms called autosomal recessive and autosomal dominant. there is several blood types : AB, A,B and O. each kind of blood type has rhesus positive or negative, depends on the inheritance. when there is A,B,AB and all of them are rheus positive they are autosomal possitive. there is a tabel that will show it clearly: (parents)AB +B=(offsprings) AB, B (p)AB +AB= (O) A,AB,B (P)A+A= (O) A (P)A+AB= (O) A,AB (P)A +O =(O)A (P)O+O=(O) (P)AB+O=(O)A,B So, finally to your question : it is possible that father with AB will have a childreb=n that is B , but it depends on the mother blood type and also depends on the positive and negative RH.

Answer 4

Yes. A man can be heterozygous type O (aO or bO) and the woman could be Bb, Ba, or Bo. A child from this union could be AB, A, B, or O. If you want to know if it's really your kid, you need to do a DNA test. Blood type alone won't tell you. The above answer is based on the false idea that there are recessive ABO blood type genes. The answer is no.

Based on Mendelian genetics, A man with blood type O is homozygous for the O allele and his genotype is OO. A woman with blood type B can be either homozygous (BO) or heterozygous (BB). The progeny of these two parents can only possibly be types O (OO) or B (BO). In order for this woman to have offspring of type AB, the father must contribute an A allele. He must therefore be type A (AA or AO) or AB (AB). see: http://en.wikipedia.org/wiki/Blood_type

Answer 5

We are looking for the possible blood types of a baby.

Parental information:

• Mother type A --can be AA or AO = contributes A or O gene
• Father type A -- can be AA or AO = contributes A or O gene

Baby receives one gene from each parent:

• Baby is type AA = Type A
• Baby is type AO = Type A
• Baby is type OO = Type O

In order for the baby to be Type B (BB or BO), he must inherit one B gene from either parent. Neither of these Type A parents have a B gene.

Answer 6

Yes, the possible blood groups of children whose parents are A & B are: A or B or AB or O See also: http://www.bloodbook.com/inherited.html

Answer 7

Not possible, the mother's genotype is either AA or AO and that of a man with type O is OO, and therefore none of the can contribute the gene for needed for B type blood.

Answer 8

yes obviously blood type is something inheritaed but it is possible for everyone to be any type of blood regardless of the parents blood type.

Answer 9

No, the father would have to be B, or at least BO