47 chromosomes with XXY genotype is known as .

Options

A. turner's syndrome
B. klinefelter's syndrome
C. super male
D. super female

Answer

The condition characterized by 47 chromosomes with an XXY genotype is known as Klinefelter syndrome. This genetic anomaly occurs due to a non-disjunction error during meiosis, where the sex chromosomes fail to separate properly in either the egg or sperm cell. As a result, males with this condition possess an extra X chromosome, leading to a total of 47 chromosomes instead of the typical 46.

Individuals with Klinefelter syndrome often experience various physical and developmental challenges. Common symptoms include the development of breast tissue in males, reduced facial and body hair growth, and delayed or incomplete puberty. The presence of an additional X chromosome can also lead to other health issues and learning difficulties.

In summary, the answer to the question is:
**Klinefelter syndrome**

### Step-by-Step Solution:
1. Identify the chromosome count and genotype: The question states there are 47 chromosomes with an XXY genotype.
2. Understand the cause of the anomaly: This condition arises from a non-disjunction error during meiosis, leading to improper separation of sex chromosomes.
3. Recognize the implications of the genotype: Males typically have one X and one Y chromosome, but in this case, there are two X chromosomes and one Y chromosome.
4. List the symptoms associated with the condition: Individuals may experience breast development, lack of body hair, and delayed puberty.
5. Conclude with the name of the syndrome: This genetic condition is known as Klinefelter syndrome.