Yi Ling experiences her first menstrual period two months after her twelfth birthday. This event is called ________ and it represents development of a ________ sex characteristic.

Name: Yi Ling experiences her first menstrual period two months after her twelfth birthday. This event is called ________ and it represents development of a ________ sex characteristic.
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Question

Quizplus · Accepted Answer

Menarche is the first menstrual period, and it represents the development of a primary sex characteristic.

Yi Ling Experiences Her First Menstrual Period Two Months After