Question

The intersex is produced by ________________

(a) Fusion of a male and female zygote

(b) Loss of X chromosome from some cells

(c) Loss of Y chromosomes from some cells

(d) Gain of X or Y chromosome due to non-disjunction

I have been asked this question in an online quiz.

My enquiry is from Sex Determination in Mammals in section Chromosomes and Sex Determination of Cytogenetics

Answer 1

Right choice is (c) Loss of Y chromosomes from some cells

The best I can explain: Intersex has the combination AA+ XO/XY. Presence of Y chromosomes develops male character so AA+XY cells are male. Absence of Y gives female characters so AA+XO gives female, this is due to loss of Y chromosome from these cells. Overall it results in intersex.