Which of the following hormones has a permissive action at the onset of pubey?
Insulin
Leptin
GnRH
Growth hormone
Ans: B. LeptinRef: Ganong 25/e p397, 24/e p399; Knobil and Neill's Physiology of Reproduction 2014/p1607; Novaks 13/e p410).Leptin has a permissive action at the onset of pubey.