Question

Find out the mismatch

• A. Klinefelter's syndrome-XO
• B. Haemophilia-sex linked
• C. Down's syndrome-autosomal aneuploidy
• D. Turner's syndrome-females with retarded sexual development

Answer 1

The correct option is A Klinefelter's syndrome-XO

• Hemophilia is a sex-linked recessive disorder. The abnormal gene responsible for hemophilia is carried on the X chromosome.
• Aneuploidy is the presence of an abnormal number of chromosomes in a cell. Down syndrome also known as trisomy 21, is a genetic disorder caused by the presence of all or part of the third copy of chromosome 21.
• Turner syndrome is a chromosomal condition that affects development in females. An early loss of ovarian function (ovarian hypofunction or premature ovarian failure) is also very common.
• Klinefelter syndrome is a genetic condition that results when a boy is born with an extra copy of the X chromosome.

So, the correct answer is 'Klinefelter's syndrome-XO'.