Thalassemia and sickle-cell anaemia are caused due to a problem in globin molecule synthesis. Select the correct statement.

1. Both are due to a qualitative defect in globin chain synthesis

2. Both are due to a quantitative defect globin chain synthesis

3. Thalassemia is due to less synthesis of globin molecules

4. Sickle-cells anaemia is due to a quantitative problem of globin molecules

Which of the following is not a X-linked recessive disease?

(1) Haemophilia 

(2) Colour blindness

(3) β thalassemia

(4) Glucose-6-phosphate dehydrogenase deficiency.

If both parents are carriers for thalassaemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child?

(1) 25%

(2) 100%

(3) No chance

(4) 50%

Which of the following are correct with respect to Thalassemia?

1. An autosomal dominant disorder
2. Defect due to mutation or deletion
3. Parents will be homozygous for thalassemia
4. Occurs due to vitamin deficiency

Read the following statements with respect to Thalassemia and find the wrong one.

1. Quantitative disorder
2. Different forms of Thalassemia are observed
3. Anaemia is not a characteristic feature of this disease
4. Defect due to mutation and deletion