In the male reproductive system, the pituitary hormone stimulates leydig cells to secrete testosterone, and the pituitary hormone stimulates sertoli cells to secrete protein and other molecules required for spermatogenesis. a. fsh; gnrh b. fsh; testosterone c. gnrh; fsh d. lh; inhibin e. lh; fsh

Luteinizing hormone (LH) stimulates Leydig cells to secrete testosterone

Follicle stimulating hormone (FSH) stimulates Sertoli cells to secrete protein and other molecules required for spermatogenesis

Explanation:

Under the influence of gonadotropin-releasing hormone, the anterior pituitary releases luteinizing hormone (LH) and follicle-stimulating hormone (FSH). In males, LH stimulates interstitial cells of testes (Leydig cell) to secrete the hormone testosterone. FSH acts indirectly to stimulate spermatogenesis by causing the release of androgen-binding protein (ABP) from the Sertoli cells. The function of ABP is to maintain the higher concentrations of testosterone to stimulate the final steps of spermatogenesis in the seminiferous tubules.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."