Breast develop due to action of: (A) Progesteron, (B) Oestrogen, (C) Activin, (D) All of the above
Answer is B. The breast is one of two prominences located on the upper ventral region of the torso of female primates. In females, it serves as the mammary gland, which produces and secretes milk and feeds infants. Both females and males develop breasts from the same embryological tissues. At pubey, estrogens, in conjunction with growth hormone, cause breast development.