Onset of puberty

Answer 1

The onset of puberty usually occurs from ages 10 - 15. Some of the first noticeable sings in males are the voice deepening and facial, armpit and pubic hair growth. For females some of the most noticeable signs include, changes in body shape.

See link:

http://www.ehow.com/how_2102746_tell-youve-started-puberty.html

(For boys and girls)

Answer 2

Normally, the first indicator of puberty for males is the growth of penis hair around your penis and scrotum, on your upper lip, and/or under your arms and on your legs. You may also experience spontaneous erections and begin feeling sexual feelings toward the opposite gender (or, if you prefer, the same gender).

The testes begin to grow larger, hang lower and the skin there darkens in color and pubic hair starts to grow as the first signs of puberty in a boy.

Answer 3

LH is the first hormone to demonstrate an increased secretion

Answer 4

Onset of puberty means that some changes are taking place in your body. Like there will be increase in the size of the testis. There will be growth of hair on the pubic regions.