Which cells are responsible for development of male reproductive structures

sustentacular cells

Explanation:

The hormone produced by the developing sustentacular cells, responsible for influencing the development of male reproductive structures.

carbon

explanation:

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.