Who has the xy chromisine?

Answer 1

Males have the XY Chromosome.

Females have the XX Chromosome. Labelled x'x" for the exervise.

When combining and to make sure the genders remain at 50% M & 50% F .

Hence

X'Y = M

X"Y = M

XX' = F

XX" = F

So you can see from the four possible outcomes , two are male and two are femeale, maintaining 50% of each gender in the population.

Answer 2

If by chromisine you mean chromosome, males have the xy chromosome