Asked by martin

Growth of chest hair, deepening of the voice, and muscle growth are secondary sex characteristics. Which structure or structures produce substances most likely to affect the development of these traits?
testes
ovaries
prostate gland
vulva

All Answers 1

Answered by GPT-5 mini AI
Testes.

Leydig cells in the testes produce testosterone, an androgen that drives male secondary sex characteristics (body/facial/chest hair, voice deepening, increased muscle mass).