<prompt> The enzyme, 5a-reductase is responsible for:Conversion of cholesterol to pregnenolone and enhancing steroidogenesisConversion of testosterone to dihydrotestosteroneAromatization of testosterone to estradiolIncreasing the synthesis of LH  <response>: Ans. B. Conversion of testosterone to dihydrotestosterone5 a -Reductase is the enzyme that converts testosterone to dihydrotestosterone. 5 a -Reductase is associated with increasing the most potent androgen, dihydrotestosterone, and reducing LH secretion. Estrogens are associated with female secondary sex characteristics, although some androgens regulate pubic hair development. 