In: Biology
Which of the following disorder is not due to an aneuploidy condition?
Select one:
a. Down syndrome
b. Klinefelter syndrome
c. Cri du chat syndrome
d. Edwards syndrome
Answer is option c)
Cri du chat syndrome.
Cri-du-chat syndrome is a chromosomal condition that results when a part of chromosome 5 is missing. This is not a aneuplidic condition because aneuploidy is the presence of an unusual number of chromosomes in a cell. In such a condition human cell will have 45 or 47 chromosomes rather than the standard 46 .
Aneuploidy is the presence of an unusual number of chromosomes in a cell. In such a condition human cell will have 45 or 47 chromosomes rather than the standard 46 .
Other options are wrong since this go under aneuploidy condition.
(Trisomy- A hereditary disease wherein an individual has three duplicates of a chromosome rather than two.)
Down syndrome-trisomy of 21 st chromosome.
Edward syndrome-trisomy of 18 th chromosome.
Klinefelter syndrome -It’s a chromosomal disorder in which there is at least one extra X chromosome to a normal male karyotype-46,xy.