Question

Congenital disease that occur due to alteration in the number of chromosomes are _________ and ___________ .

• A. Down syndrome
• B. Turner syndrome

Answer 1

1. Congenital disease that occur due to alteration in the number of chromosomes are Down syndrome and Turner syndrome.
2. In these diseases a person either has extra nucleotide this means he is born with 47 chromosome or born with one less means 45 chromosome.