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Ở người, gen qui định nhóm máu A, B, O, AB do 3 alen IA, IB, IO trong đó alen IA, IB trội hoàn toàn so với alen IO, người có kiểu gen IAIB có nhóm máu AB. a. Bố thuộc nhóm máu O, mẹ thuộc nhóm máu B thì sinh ra con nhóm máu gì? b. Để con có nhóm máu AB thì bố mẹ phải có nhóm máu gì? (không cần viết SĐL) Giải thích đầy đủ giúp mình nha
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