Yes: Yes it is. Your blood type a is because on of your parents was type a and the other type o. Your siblings happened to get the recessive o allele from the type a parent and o from the other. You got the a allele from the a parent making you a. It's totally possible.
Answered 4/19/2019
6.2k views
Yes: Yes, that is possible. A is dominant so it is possible for your siblings to be type o with the same mother and father.
Answered 2/6/2012
6.1k views
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