Multiple choice

In man, which of the following genotypes and phenotypes may be the correct result of aneuploidy in sex chromosomes?

  1. 22 pairs + XXY males

  2. 22 pairs + XX females

  3. 22 pairs + XXXY females

  4. 22 pairs + Y females
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The condition of chromosomal change which involve the loss or gain of single chromosome is called aneuploidy. Genotype 22 pairs + XXY males shows the condition of Klinefelter's syndrome. Klinefelter's syndrome was studied in 1942 by an American Dr. H.F. Klinefelter. The patient of this syndrome have an extra X chromosome, hence the genotype is XXY instead of normal XY and patient has 47 chromosomes instead of 46. 

Keep practicing — related questions