Can parents type A have a baby Type O?

Answer 1

Yes. Blood type is determined by two alleles. A person with type A blood could have AA or AO. If both parents are AO, the child could be AA, AO, or OO (types A or O).

Answer 2

Yes, this has to do not with the sugars (A or B, type O is a lack of either of these sugars) but with a gene that attaches the sugars to the cell surface, we'll call this gene H. If one of the parents is deficient in gene H the parent may MAKE the A or B sugars but it has no way of being attached to the cell surface so the parent looks like they are type O. If the actual type O parent contributes a functioning H gene and the other "fake type O" parent contributes the gene that codes for the A sugar the child can be type A. This is an example of recessive epistasis.

Answer 3

Yes, providing that they are both heterozygous for blood group A. That is each parent has the genotype AO, meaning that their children could be AA, AO, or OO. In this case blood groups A and O would both be possible for their offspring.

Answer 4

Yes it is genetically possible for parents with blood group A and B to have a offspring with blood group O in the condition if the parents are heterozygous and the parent with A blood group has following genetic make up (IAIO) of the parent with B blood group has following blood group(IBIO) on the cross between these parents the offspring produced may contain following blood group - A (25% chance),B(25% chance) ,AB (25% chance) , O (25% chance).

Answer 5

Yes, both parents could have a recessive type O gene and a dominant type B gene. If both the recessive genes were passed the offspring would have two type O recessive genes.

Answer 6

No, if both parents are O, then the child has to be O.

Answer 7

Yes, it is possible for two parents with blood type A to have a baby with blood type O. This can occur if both parents are carriers of the O allele and each pass on the O allele to the child.