Colorblindness and hemophilia A both recessive traits. The two genes are located

Question

Colorblindness and hemophilia A both recessive traits. The two genes are located 10cM apart on the X chromosome. A phenotypically normal man with no family history of either disease is married to a phenotypically normal woman, whose father has hemophilia A and mother is colorblind, If this couple has a son.. Part A what is me probability that he will have neither hemophilia nor colorblindness? Express your answer as a percent. Do not include the percent symbol which should already be part of the answer box.

Explanation / Answer

Answer:

The women can be a carrier, both are recessive traits

Genotype of women - X Xh   (Carrier women)

Genotype of Men - XY (Normal men)

                                       XXh    x       XY

                              =   XX (normal), XY (normal), XXh (carrier women) , XhY (infected men)

so, two sons, one normal and other infected (50:50)

the probability is 50% .

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