A) syndrome caused due to gene mutation
B) aneuploidy of sex chromosome
C) loss of one sex - chromosome from the diploid set
D) aneuploidy of autosome.
Correct Answer: D
Solution :
: Downs syndrome is a congenital Syndrome originating from the nondisjunction of chromosomes of pair 21 during meiosis. The affected individuals, therefore, have 47 chromosomes instead of 46 with three copies of chromosome 21 instead of usual two. This condition of abnormal number of one or more chromosomes in a cell is called aneuploidy.
You need to login to perform this action.
You will be redirected in
3 sec
