Sickle-cell disease, usually presenting in childhood ... a concept known as genetic polymorphism. Science X Daily and the Weekly Email Newsletter are free features that allow you to receive ...

Sickle Cell disease is an autosomal recessive disorder that causes anemia, joint pain, a swollen spleen, and frequent, severe infections. It illustrates balanced polymorphism because carriers are ...

Doctors noticed that patients who had sickle cell anemia, a serious hereditary blood disease, were more likely to survive malaria, a disease which kills some 1.2 million people every year.

Sickle cell disease is the most common inherited haemoglobinopathy in Tanzania, with 11 000– 14 000 children born with the ...

Can we predict that natural selection will weed out genetic disease over time? Sickle ... cell anaemia by DNA analysis of amniotic-fluid cells. Lancet 2, 910–912 (1978a) ——. Polymorphism ...