Which of the following scenarios occurring simultaneously co

Which of the following scenarios occurring simultaneously could produce an XXXY male?

Solution

The first option is correct;

Male AA+ XY = when nondisjunction= one has A+XY (this will survive), other has A+0(this will die)   [meiosis I]

Then A+XY will make with disjunction= A+XY and A+XY

Other hand female AA+XX if nondisjunction in meosis I then A+XX   

Then in meosis II the A+XX will form naturally two gametes A+XX and A+XX

If it occur in meiosis II then

Female AA+XX = A+X, A+X                 [normal in meosis I]

Then A+X may develop A+XX in one gamete and other get A+0.        [nondisjunction in meosis II]