Puberty does not normally occur in humans under the age of 8 years, because before that age: the ovaries and testes cannot secrete gonadal steroidsthe hypothalamus is unresponsive to gonadal steroidsthis should not be selected the pituitary secretes excess amounts of gonadotrophin releasing hormone (gnrh)the hypothalamus is very sensitive to negative feedback by gonadal steroids​

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