Which of the following is the karyotype of male who is sexually under developed with rudimentary testes and prostate glands, sparse pubic and facial hair, long arms and legs and large hands & feet?
**Core Concept**
The question is testing the understanding of a specific genetic disorder characterized by sexual underdevelopment, physical abnormalities, and specific chromosomal alterations. This condition is associated with an extra X chromosome in males, leading to aneuploidy.
**Why the Correct Answer is Right**
The correct answer is related to Klinefelter syndrome, a genetic condition where males are born with an extra X chromosome, resulting in a karyotype of 47,XXY. This condition is characterized by sexual underdevelopment, including rudimentary testes and prostate glands, sparse pubic and facial hair, and physical abnormalities such as long arms and legs, and large hands and feet. The presence of an extra X chromosome disrupts normal testicular development and function, leading to hormonal imbalances and the characteristic physical and sexual features of the condition.
**Why Each Wrong Option is Incorrect**
* **Option B:** This option is likely related to another genetic condition, but it is not the correct answer. For example, Turner syndrome (45,X) is a condition where females are born with one X chromosome, but this is not the correct answer for a male with the described symptoms.
* **Option C:** This option is also incorrect, as it does not match the described symptoms or the known genetic conditions associated with them.
* **Option D:** This option is not relevant to the described symptoms or the genetic conditions associated with them.
**Clinical Pearl / High-Yield Fact**
Klinefelter syndrome is a common genetic condition, affecting approximately 1 in 650 males. It is essential to recognize the characteristic physical and sexual features of this condition to provide appropriate diagnosis and management.
**Correct Answer: C. 47,XXY**