KCET 2023 Biology Solved Paper

In the male heterogametic (XX–XY) type of sex determination, males possess two different sex chromosomes, $XY$, while females possess two similar sex chromosomes, $XX$.During gamete formation in males, meiosis segregates the $X$ and $Y$ chromosomes, so the male produces two kinds of gametes: half carrying $X$ and half carrying $Y$.Thus, the male parent produces dissimilar gametes (heterogametes), which is precisely what defines the male heterogametic condition.In contrast, the female parent $(XX)$ produces only one kind of gamete, all carrying $X$, i.e. similar gametes (homogametes).This also rules out the other options: males certainly do produce gametes, and it is the female, not the male, that produces similar gametes.Hence, the correct answer is option A: Male parent produces dissimilar gametes.