Question

Choose the correct option-

A human female with Turner’s syndrome-

• A. has one additional X chromosome
• B. has 45 chromosomes with XO
• C. is able to produce children with a normal husband
• D. exhibits male characters

Answer 1

The correct option is B

has 45 chromosomes with XO

The correct option is B.

Explanation of correct option

1. Turner's syndrome affects females, where one X chromosome is partially or completely missing.
2. Thus, their chromosomal composition can be denoted as 44 autosomes and XO sex chromosomes.

Explanation of incorrect option

Option A

1. An additional X chromosome can be present in men and women.
2. The presence of an additional X chromosome in men results in Klinefelter syndrome.
3. If women have an additional X chromosome, it is called Trisomy X syndrome.

Option C

Human female with Turner's syndrome is generally infertile.

Option D

Females with Turner syndrome have various developmental and mental problems like under-developed ovaries, short height, and defects in the heart.

Final answer: A human female with Turner’s syndrome has 45 chromosomes with XO.