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blood group O. Is this information enough to tell you which of the traits – blood group A or O – is dominant? Why or why not?
Answer
Given information is not enough to tell us which characteristics are dominant –blood group A or O. Blood type A is always dominant in ABO blood and blood type O is always recessive. Here, the father’s blood group may be genotypically AA (homozygous) or AO (heterozygous), whereas that of mother can be OA or OO.