Which of the following is an example of a primary sex characteristic?
(1 point)
A) development of body hair in boys
B) development of ovaries in girls and testes in boys
C) development of breasts
D) development of acne in boys
B) development of ovaries in girls and testes in boys
B) development of ovaries in girls and testes in boys
To determine the correct answer, let's first understand what primary sex characteristics are. Primary sex characteristics are the physical features that differentiate males and females and are directly involved in reproduction. These characteristics usually develop during puberty.
Now, let's analyze each option:
A) Development of body hair in boys: This is a secondary sex characteristic, not a primary sex characteristic. Secondary sex characteristics are physical features that arise during puberty but are not directly involved in reproduction.
B) Development of ovaries in girls and testes in boys: This is indeed an example of a primary sex characteristic. Ovaries in girls and testes in boys are responsible for producing eggs and sperm, respectively.
C) Development of breasts: This is also a secondary sex characteristic, not a primary sex characteristic. Breasts typically develop in girls during puberty but are not directly involved in reproduction.
D) Development of acne in boys: Acne is not considered a primary sex characteristic. It is a common skin condition that can affect both males and females but is unrelated to reproductive functions.
Based on the explanations above, the correct answer is B) development of ovaries in girls and testes in boys.