5. Mary has blood type A and she marries John , whose blood type is B. They have three children: Joan. James and Pete. Joan has blood type 0, James has blood type A, and Pete has blood type B. Explain

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Agnieszka Polec asked Aug 2, 2023

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5. Mary has blood type A and she marries John , whose blood type is B. They have three

children: Joan. James and Pete. Joan has blood type 0, James has blood type A, and Pete has
blood type B. Explain how this is possible.

Biology
high-school

Agnieszka Polec asked Aug 2, 2023

by Agnieszka Polec

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Answer:

Mary's genotype must be IAi while John's must be IBi. When the gametes met up at each conception, Joan got ii, James got IAi, and Pete got IBi.

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Rnet answered Aug 7, 2023

by Rnet

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