Which of the following secondary sex characteristics do not develop during the teen years?
The following secondary sex characteristics do not typically develop during the teen years:
- Deepening of the voice in males
- Breast development in females
Secondary sex characteristics are physical changes that occur during puberty that are not directly related to reproductive organs. Some examples of secondary sex characteristics include the growth of breast tissue in females, the deepening of the voice in males, the appearance of facial hair in males, and the development of wider hips in females.
In general, most secondary sex characteristics develop during the teen years. However, one secondary sex characteristic that does not typically develop during the teen years is the ability to produce mature sperm in males. Sperm production, or spermatogenesis, usually begins around puberty but is not fully mature until a few years later, typically in the late teens or early twenties. So, the development of mature sperm is not a secondary sex characteristic that occurs specifically during the teen years.