Which of the following secondary sex characteristics do not develop during the teen years?
1. development of acne in boys 2. development of ovaries in girls and testes in boys 3. development of breasts in girls 4. development of body hair in boys
2. development of ovaries in girls and testes in boys
The secondary sex characteristics that do not develop during the teen years are the development of ovaries in girls and testes in boys. During puberty, girls typically experience the development of breasts, while boys experience the development of body hair and acne.
To determine which of the secondary sex characteristics do not develop during the teen years, we can look at each option and consider when and how these characteristics typically develop.
1. Development of acne in boys: Acne is a common skin condition that often occurs during puberty, which is typically experienced in the teen years. However, it is important to note that acne development can vary among individuals, and it may continue into adulthood for some people. So, the development of acne in boys can start during the teen years but may persist beyond that.
2. Development of ovaries in girls and testes in boys: The development of ovaries in girls and testes in boys occurs during fetal development, not during the teen years. These reproductive organs are present from birth and continue to develop until they reach maturity during adolescence.
3. Development of breasts in girls: The development of breasts in girls, known as breast development or breast budding, is a secondary sex characteristic that typically occurs during the teen years. It is a normal part of female puberty and is often one of the first noticeable signs of physical changes in girls.
4. Development of body hair in boys: The development of body hair in boys, including facial hair, pubic hair, and increased body hair, is one of the secondary sex characteristics that occur during puberty. This typically begins in the early to mid-teen years, though the timing and extent of body hair growth can vary between individuals.
Based on the information above, the characteristic that does not develop during the teen years is the development of ovaries in girls and testes in boys. This development occurs before birth during fetal development.