The testis-determining factor (TDF)is responsible for

Question

Quizplus · Accepted Answer

The testis-determining factor (TDF), also known as SRY gene, is responsible for the differentiation of the undifferentiated gonads into testes during embryonic development. Its presence triggers the formation of testicular tissue and the production of male hormones, which leads to the development of male external and internal reproductive organs.

Option B is incorrect because differentiation of the Wolffian ducts into epididymis, vas deferens, and seminal vesicles is controlled by testosterone produced by testes, not TDF.

Option C is incorrect because the descent of the testes into the scrotum is influenced by hormonal and mechanical factors during fetal development, but it is not directly related to TDF.

Option D is incorrect because the Müllerian ducts, which develop into the female reproductive organs in the absence of TDF, are not converted into testes.

The Testis-Determining Factor (TDF)is Responsible for