What is the most common method of sex determination in mammals?
Presence or absence of the Y chromosomect answer.
Presence or absence of the X chromosome
Combination of sex chromosomes
Environmental factors
The sex of most mammals, including humans, is determined by the interaction of their sex chromosomes. Males have one X and one Y chromosome, while females have two X chromosomes. with some animals, such as some insects and reptiles, the most popular technique of determining sex is the presence or absence of the Y chromosome, however this is not the case with mammals.
Option 3 is the corret answer