If Both Parents Have O Blood Type Can Their Child Have A?

If both parents have O blood it is this genotype. OO There is NO WAY a mating of two O type humans can yield any other type (A or B)
Only extramarital matings could do this. There must be either one or the other dominant allele ( A or B )
O is recessive and only expresses in the homozygous condition. OO Those of you who are saying otherwise are either mistaken about the blood types one or the other parent posses, or are holding some secret.

If both parents have type O then the child will be type O.

When both parents are type o it means they are both homozygous recessive or pure breeding for o.   Neither therefore have an A allele to pass on. So the answer is NO.     Two o group parents can only have type o offspring.    Because o is a recessive condition!

If both parents are O,can the kid be A,B or AB is it Possible?

It's very refreshing to see so many posters with the same situation as me. My mother is O+ and my father is O-, my sister is O- and somehow I ended up with A+ blood. Everything I find online says it's not possible, but I'm sure it has to be. My mother about had a heart attack when I accused her of having an affair with the mailman.

I was born an A and my parents are both O+ .. I've been trying to better understand this and what affects it could possibly have.. So if anyone has any information please post.. Thanks

My husband and I both have 0+ and our son is A+ so it is possible!!!!

It is possible.. My husbands blood type is O positive and my blood type is O- and our son is A-...how it is possible I have no clue thats what I'm on here trying to figure out so if anyone knows how it is possible then please post something thank you

Me and my parents have type O but my brother has type A. It could be possible that type O parents have a type A child.

I have A+ and both of parents are O - it is possible.