At puberty a girl is affected by estrogen and progesterone and a boy by testosterone.This is called

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The statement is referring to the hormonal changes that occur during puberty, which largely determine the development of secondary sex characteristics and reproductive functions. In females, estrogen and progesterone are primarily responsible for breast development, menstrual cycles, and other physical changes associated with femininity. In males, testosterone induces the growth of facial and body hair, deepening of the voice, and other masculine characteristics. While gender identity and external gender expression are also influenced by a range of social, cultural, and psychological factors, the immediate hormonal effects of puberty play a major role in shaping biological sex differences. Accessory identity and external post-natal genderization are not commonly used terms in the context of human biology and sex differentiation.

At Puberty a Girl Is Affected by Estrogen and Progesterone