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What must be the genotype?​

What must be the genotype?​-example-1
User Garak
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1 Answer

4 votes

Answer:

XnY

Step-by-step explanation:

II-2 is a male so the genotype must have a Y in it. Majority of the other options do not have Y, so they are incorrect. Because the individual is male, the father has passed a Y chromosome, while the mother has passed an X chromosome. The X chromosome is Xn because the mother is hemolytic, which is a recessive trait. So both the mother's X chromosomes carry the hemophilia trait.

User Hemant Singh
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