Question

Number of X-chromosomes in Turner's syndrome is

• A. $3$
• B. $2$
• C. $1$
• D. Zero

Answer 1

The correct option is C $1$

People typically have two sex chromosomes in each cell: females have two X chromosomes, while males have one X chromosome and one Y chromosome. Turner syndrome results when one normal X chromosome is present in a female's cells and the other sex chromosome is missing or structurally altered.

So, the correct answer is '1'.