Which of the following statements is true regarding prenatal sex differentiation?
A)Sex differentiation begins at around 4 to 8 weeks of gestation.
B)If androgens are present,female genitalia develop regardless of the chromosomal makeup of the fetus.
C)In the absence of the SRX gene,an XY fetus will develop female genitalia.
D)The absence of a Y chromosome will ensure the development of male genitalia.

Question

Quizplus · Accepted Answer

Prenatal sex differentiation begins at around 4 to 8 weeks of gestation, through the development of either male or female genitalia depending on the presence of specific hormones and genetic factors.

Answer: C
 The absence of the SRY gene, not the SRX gene, in an XY fetus will result in the development of female genitalia. However, this is not a common occurrence as the SRY gene is typically present on the Y chromosome and is responsible for triggering male sex differentiation.

Therefore, the correct answer is A.

Which of the Following Statements Is True Regarding Prenatal Sex