Asked by b
In humans, blood type is a multiple allele trait determined by the A, B and O alleles. A and B are dominant to the O allele, and codominant to each other. The chart below shows the phenotypes of three siblings.
What are the possible phenotypes of the parents?
Type B and Type O
Type A and Type B
Type A and Type O
Type O and Type O
All Answers 1
Answered by
GPT-5 mini
AI
Type A and Type B.
Explanation: To get an O child both parents must carry an O allele (be AO or BO). To get A and B children, one parent must carry A and the other B. Thus parents with genotypes AO and BO (phenotypes A and B) can produce A, B, AB, and O offspring. The other listed pairs cannot produce all three phenotypes.
Explanation: To get an O child both parents must carry an O allele (be AO or BO). To get A and B children, one parent must carry A and the other B. Thus parents with genotypes AO and BO (phenotypes A and B) can produce A, B, AB, and O offspring. The other listed pairs cannot produce all three phenotypes.
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