25-07-2014, 20:52
(25-07-2014, 20:23)lovely11 Wrote:(25-07-2014, 20:00)Lotus Wrote: Actually it's estrogen that plays the role in developing secondary sexual characteristics.
Estrogen yes. If breasts are considered Secondary sexual characteristics, then progesterone is yes too. If the breasts are more of a nursing, instead of secondary sexual characteristic, then perhaps progesterone is not. The breasts are definitely not a Primary sexual characteristics, but they are a definitely reproductive characteristics
Primary and secondary sexual characteristics occur and develop at puberty, breasts are secondary.