In humans, sex determination is genetic. Specifically, it depends on the presence or absence of the _____ gene residing on the _____ chromosome. The gene produces a protein called _____, which causes the developing gonad to differentiate.

Question

Quizplus · Accepted Answer

The SRY gene is located on the Y chromosome and produces a protein called TDF (testis-determining factor) which triggers the differentiation of the gonads into testes in male individuals. Therefore, choice A is correct. Choice B is incorrect because the SRY gene is not located on the X chromosome. Choice C is incorrect because TDF is not produced by the X chromosome. Choice D is incorrect because the SRY gene is located on the Y chromosome, not the X chromosome. Choice E is incorrect because the size of the chromosome is not indicative of its role in sex determination.

In Humans, Sex Determination Is Genetic