Question

Which of the following human genotypes is associated with Klinefelter syndrome?

1) XXY
2) XY
3) XX
4) XYY

Answer 1

Klinefelter syndrome is associated with the XXY genotype, which presents in males with symptoms such as reduced secondary sexual characteristics and potential fertility issues.

Step-by-step explanation:

Klinefelter Syndrome and Human Genotypes

Klinefelter syndrome is associated with a specific genotype known as XXY. This genetic condition affects males and is characterized by an extra X chromosome. Individuals with Klinefelter syndrome typically have smaller testes, may develop enlarged breasts, exhibit reduced body hair, and can face challenges such as sterility and reduced testosterone production.

While females normally possess an XX genotype and males an XY genotype, Klinefelter syndrome represents a variation from the typical chromosomal arrangement. Other chromosomal anomalies include Turner syndrome (XO), Jacob syndrome (XYY), and triplo-X syndrome (XXX), each with its own set of distinctive features.