The developing cells are responsible for influencing the development of male reproductive structures through the production of anti-mullerian hormone.

I believe the developing Sertoli cells  are responsible for influencing the development of male reproductive structures through the production of anti-mullerian hormone. During embryonic development there is a sexually indifferent stage in which the embryo has the potential to develop either male or female structures. The sertoli cells produce Mullerian inhibiting substance, a peptide hormone that causes the mullerian ducts to regress.

When the ball is rising up, it gains kinetic energy. when the ball reaches the very top, it will have all potential energy, until it falls back down and gains it kinetic energy. finally when you catch the ball or it falls back down, it would have gained its potential energy back.