Question

In insects like grasshopper how xx xo is determined as male if there is absence of y chromosome

Answer 1

Because in the case of a grasshopper the male chromosome is not y . Hope you'll understand

Answer 2

In the image, the X and Y chromosomes are indicated by arrows. ... For example, in the XX-XO system found in crickets, grasshoppers, and some other insects, sperm cells that lack an X chromosome (referred to as O) determine maleness. Here, females carry two X chromosomes (XX) and only produce gametes with X chromosomes.