Question

A woman's first child suffered from Down's syndrome. During her second pregnancy, she wanted to find out whether her second child would be normal or not. Which method will the gynaecologist adopt to test the genetic abnormality in the embryo?

Name one commonly occurring genetic disorder in humans which is caused due to monosomy (one chromosome less than the normal number of chromosomes) of sex chromosome. Give its two symptoms.

Which of the following is not an example of aneuploidy ?

During a medical investigation, an infant was found to possess an extra copy of chromosome no. 21. Identify the disorder the child is suffering from. Describe the symptoms the child is likely to develop later in life.