Question

Answer in 40 to 80 words:
Write the karyotype of the following syndromes:
i) Down's syndrome
ii) Kinefelter's syndrome
iii) Turner's syndrome

Answer 1

i) Down's syndrome is the condition in which the child bears the trisomy of the chromosome 21. The karyotype will be 47, XX/XY + 21.

ii) Klinefelter's syndrome is the condition in which the male have one extra copy of the X-chromosome. The karyotype will be 44 A + XXY.

iii) Turner's syndrome is a condition in which the female is born with only one copy of the X-chromosome. The karyotype will be 44 A + X.