Question

Which one of the following is sex chromosomal disorder ?
a) Colotublindness
b) Thalassemia
c) Turner's syndrome
d) Down's syndrome

Answer 1

●Turner's syndrome of the following is sex chromosomal disorder.

●Option c) Turner's syndrome .

Answer 2

Answer:

c) Turner's syndrome

Explanation:

Turner's syndrome is a chromosomal disorder because it is caused by the absence of one X-chromosome which results in 45 chromosomes in an individual. There is only one X-chromosome. Such females are sterile because ovaries are rudimentary and secondary sexual characters are absent. The karyotype in such individuals is (44 + X0). Male Turner's syndrome does not survive that has the karyotype of (44+Y).