Changes during Puberty?

Question:

It is common knowledge that there are changes to the body during puberty, but why is it that some people don't change at all physically? Why is it that some people stay exactly the same throughout their teenage years leading onto adulthood? Physically speaking

Answers:
At puberty there is a massive surge in sex hormones which cause breasts/periods/ovulation in female and penile/testicular and sperm production in the male.
These changes are produced by chemical messengers(called hormones).
The master controller is produced in the pituitary gland at the underside of the brain-which sets everything off.
Those who stay exactly the same as a child even when an adult are due to a failure of the pituitary gland to produce the relevant hormones. One of these is Growth hormone so they stay at the height of a child-So called pituitary dwarfs .
Other hormones are not produced so they do not have breast /penile changes at puberty as expected

because of they DNA

Changes during Puberty?

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