Question

a carrier female has gene for hemophilia at one one loci & gene for color blindness on another loci married a normal man what a man a color blind man what is the probality to have progeny with both the disease

Answer 1

if we this question we know that both this disease is sex linked ressicessive. now if a female have both on different loci now man has normal X and Y chromosome and after married so female can transfer only one of chromosome so only one type of disease is transfer. female is not affected because one X chrosome come from father and it work like carrier but not affected but in the case of male it carry only one  X chromsome show by mendel law it has 50 50 Chances of both disease