Young boys at puberty start growing facial ha | vedclass

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(A) At puberty,the secretion of sex hormones (testosterone in males) increases significantly.These hormones are responsible for the development of sec

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Secondary sexual characters

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(A) At puberty,the secretion of sex hormones (testosterone in males) increases significantly.These hormones are responsible for the development of secondary sexual characters,which distinguish males from females but are not directly involved in reproduction.Facial hair growth,deepening of the voice,and broadening of shoulders are classic examples of secondary sexual characters in human males.Therefore,the correct option is $A$.

Young boys at puberty start growing facial hairs. This is an example of

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