Which is incorrect about thalassemia?

Options

A. This blood disease is transmitted from parents to the offspring when both the partners are unaffected carrier for the gene (or heterozygous).
B. The defect is due to either mutation or deletion which ultimately results in reduced rate of synthesis of one of the globin chains that make up haemoglobin.
C. This causes the formation of abnormal haemoglobin molecule resulting into anaemia which is characteristic of the disease.
D. Thalassemia differs from sickle cell anaemia in that the former is a qualitative problem of synthesising an incorrectly functioning globin while the latter is a quantitative problem of synthesising too few globin molecules.

Answer

D

Explanation

Sickle cell anaemia differs from thalassemia in that the former is a qualitative problem of synthesising an incorrectly functioning globin while the latter is a quantitative problem of synthesising too few globin molecules.