Question

The karyotype of an individual with Turner's syndrome is

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

Answer 1

The correct option is C 44 A + XO

Turner syndrome (TS) or 45, X, is a condition in which a female is partly or completely missing an X chromosome. Signs and symptoms vary among those affected. Often, a short and webbed neck, low-set ears, low hairline at the back of the neck, short stature, and swollen hands and feet are seen at birth. It is due to a chromosomal abnormality in which all or part of one of the X chromosomes is missing or altered. While most people have 46 chromosomes, people with TS usually have 45. So, the karyotype of an individual with Turner's syndrome is 44A + XO.

So, the correct answer is option C.