The male fruit fly and female fowl are heterogametic while the female fruit fly and the male fowl are homogametic. Why are they called so ?

Explanation

Such type of sex determination mechanism 13 designated to be the example of MaleHeterogamety and other female homogamety. In the first case the male fruit fly (xy) and female fruit fly (xx). So, it 1s called male Heterogametic.
In the second case, the male fowl has similar (22) chromosomes and female fowl has dissimilar (zw) chromosomes. So, this is‘called female heterogamet.