In Some Animal Species,like Humans,sex is Determined By

Question

In some animal species,like humans,sex is determined by:
A) The presence of the Y chromosome
B) The number of X chromosomes in relation to the number of sets of autosomes
C) The size of the Y chromosome
D) None of these
E) All of these

Accepted Answer

In humans and many other species, the presence of the Y chromosome determines male sex. Individuals with an XY genotype develop as males, while those with an XX genotype develop as females. Therefore, choice A is the best choice.