A common sexdetermining mechanism in mammals is a haplodiplo

A common sex-determining mechanism in mammals is:

a. haplo-diploidy

b. a male defining gene on the Y chromosome

c. a female defining gene on the X chromosome

d. temperature dependent sex determining system

e. all of the above have been described in mammals

Solution

b. a male defining gene on the Y chromosome

mammalian Y chromosome is a crucial factor for determining sex in mammals. SRY gene on the Y chromosome is responsible for the initiation of male sex determination in humans.