Destruction of ovaries prior to 7th week following fertilization results in:
**Core Concept**
The development of the female reproductive system is a complex process that involves the action of various hormones and the presence of specific genetic factors. The presence of ovaries is crucial for the development of the female internal genitalia, including the uterus and fallopian tubes.
**Why the Correct Answer is Right**
The destruction of ovaries prior to the 7th week following fertilization results in the absence of anti-Müllerian hormone (AMH), which is produced by the granulosa cells of the ovaries. AMH is responsible for the regression of the Müllerian ducts, which give rise to the uterus, fallopian tubes, and upper part of the vagina in females. Without AMH, these ducts persist and give rise to the male internal genitalia, including the epididymis, vas deferens, and seminal vesicles. However, the external genitalia and the gonads are female, resulting in a condition known as true hermaphroditism or ovotesticular disorder of sex development (OT-DSD), which is not among the options provided.
**Why Each Wrong Option is Incorrect**
**Option A:** Pseudohermaphroditism refers to a condition where an individual has a normal chromosomal and gonadal sex but displays ambiguous or male external genitalia. This condition is not a direct result of the destruction of ovaries prior to the 7th week following fertilization.
**Option B:** Uterine agenesis refers to the congenital absence of the uterus, which can occur due to various genetic and environmental factors. However, it is not a direct result of the destruction of ovaries prior to the 7th week following fertilization.
**Option C:** Masculinisation refers to the development of male secondary sexual characteristics, which is not a direct result of the destruction of ovaries prior to the 7th week following fertilization.
**Clinical Pearl / High-Yield Fact**
It is essential to note that the presence of a uterus is not solely determined by the presence of ovaries. Other genetic and environmental factors can influence the development of the female internal genitalia.
**✓ Correct Answer: D. None of the above**