If a couple are A and B blodtype respectively, could their child be type O?

Question

Suspicious

Answer 1

Not suspicious... just genetics....

AO x BO  =  1/4 AO; 1/4 BO; 1/4 AB; 1/4 OO

A heterozygous A (AO) and a heterozygous B (BO) will have a Type O child 25% of the time...

Answer 2

Yes.  There are 4 blood types written like so: AO/AA (blood type A), BO/BB (blood type B), AB (blood type AB), and O (blood type O).  If one parent is AO (meaning they have 1 A allele and 1 O allele) that parent can pass on either one of the 2 to their child.  The same goes for the B allele of the type BO.  But please note that there are 2 genotypes for  A and B blood types.  The only way parents can pass on an O allele is if they have it in their genotype, ie; AO or BO.  If a parent is of the genotype AA (meaning they have 2 A alleles) or BB, it is impossible to have a child with the O blood type.  

*Note: O is a recessive allele and in order to be expressed the carrier must be homozygous recessive for the trait.  They must have the genotype OO.

Answer 3

Yes. See the blood type calculator below.

Answer 4

if they're both heterozygous, yeah. but it's not as likely.

Answer 5

Yes, each parent has two alleles that they can possibly give to the child if one parent had A allele and O allele,  and the other had B allele and O allele, then the child could possibly recieve both the O alleles, which are reccessive. Thus they only show when there are two of them at the same time.

Answer 6

Yes the baby can be type O

If one parent is heterozygous A (Ai), and the other is heterozygous B (Bi) then children could be:

Ai (heterozygous A), Bi (heterozygous B), AB or ii (O)

Answer 7

Yes

Parents could be AO and BO, giving the child a 1/4 chance to be OO (type O).

Answer 8

Yes.O is probably always.