Question

Why are males called heterogametic?

Answer 1

Heterogametic:

1. Human male gamete: XY.
2. Human female gamete: XX.
3. In humans, the male produces gametes that have two types of sex chromosomes i.e. X and Y whereas human females produce gametes of one type of sex chromosome i.e. X. Because of the produced gamete, the male gamete is referred to as heterogametic or heteromorphic whereas female gamete is referred as homogametic or homomorphic.