The karyotype of an individual with Turner’s syndrome is:

• A. 44A + XX
• B. 45A + XY
• C. 44A + XO
• D. 44A + XXY

Turner’s syndrome is a condition that affects females, characterized by the absence of one X chromosome. The typical karyotype for an individual with Turner’s syndrome is represented as:

Correct Karyotype

The correct answer is C. 44A + XO. This indicates that there are 44 autosomes and a single X chromosome, with no second X chromosome present.

Understanding Karyotypes

• 44A: Refers to the 44 autosomes.
• XO: Indicates one X chromosome and no second X chromosome.

Other Options Explained

• A. 44A + XX: This represents a normal female karyotype.
• B. 45A + XY: This indicates a male karyotype with an extra chromosome.
• D. 44A + XXY: This is associated with Klinefelter syndrome, not Turner’s syndrome.

In summary, the karyotype for Turner’s syndrome is specifically 44A + XO, reflecting the unique chromosomal makeup of individuals with this condition.