Question

The table above describes different types of chromosome disorders. Which diseases are caused by an extra chromosome?

Answer 1

The answer is (B) Edward's Syndrome, Down Syndrome, Klinefelter's Syndrome.

These syndromes are caused when there is an extra copy of chromosomes present in the cells.

In Edward's syndrome, there is an extra copy of the chromosome 18.

In Down's syndrome, there is an extra copy of chromosome 21.

In Klinefelter's syndrome, there is an extra copy of X chromosome.