<prompt> The enzyme 50a reductase mediated conversion of testosterone to dihydrotestosterone is NOT required for which of the following actions?Formation of male external genitalia in the fetusProstatic hyperophy in elderly malesPubeal changes in the male adolescentSpermatogenesis  <response>: Ref: KDT 6e p290 Testosterone is required for F - Feedback inhibition of LH secretion I - Internal genitilia development S - Spermatogenesis H - Hematopoiesis 