Q150 / 180 · AIIMS 2014 · Zoology

Which of the following occurs due to monosomy of sex chromosome?

A
Down’s syndrome
Correct answer
B
Turner’s syndrome
C
Haemophilia
D
Sickle cell anaemia

Solution

Turner's syndrome is caused due to the absence of one of the $\mathrm{X}$ chromosomes i.e., 45 chromosomes total with sex chromosomes as XO. Such females are sterile as ovaries are rudimentary. Besides this, other features include lack of other secondary sexual characters, etc.

Hence, the correct answer is option: 'B'.

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