Sickle-Cell Anemia is fairly rare but serious; if you think you have thse symptoms, contact a doctor asap.
Today, approximately one in 12 African Americans has sickle cell trait
Today, approximately one in 12 African Americans has sickle cell trait
You are probably looking for the disease 'Sickle cell anemia'. It is most common in blacks but it doesn't mean that if you are black that you have it.
no it is very common
Sickle cell is common in people from tropical areas where malaria is prevalent. Malaria can not survive on blood cells that are sickle shaped, so when populations were being killed off by malaria, those with sickle cell were surviving and passing on the sickle cell gene.
because people in europe have not gotten used to sickle cell anemia because it is soo rare in europe
Individual homozygous for the sickle cell anemia allele
its a very rare disease because you have to be heterozygous to have it! I KNOW I'M CLEVER
An opossum is NOT rare, it is a common animal.
common minerals are not rare minerals eg:not rare
Malaria is common in topical ad subtropical zones. The malaria has selected the people with sickle cell anaemia. Although person with sickle cell anemia can have malaria, the carrier, or the person with sickle cell trait is resistant to malaria.