A woman of 47 years delivered an abnormal child

cbse
principleinheritance

#1

A woman of 47 years delivered an abnormal child with a flattened nasal bridge and mouth partially open with a large protruding tongue. Name this genetic abnormality. What causes this condition?


#2

(i) This genetic disorder is called Down’s syndrome.
(ii) This condition is caused due to trisomy of chromosome number 21 (an additional copy of chromosome 21).