د "پلازموډيم فالسيپارم" د بڼو تر مېنځ توپير
''Plasmodium falciparum'' is often used an example for [[evolution]]. Since [[sickle-cell disease]] carriers are relatively resistant to malaria, and people from malaria-stricken countries are much more likely to have the sickle-cell trait, it is often given as an example to show how [[mutations]] are not inherently good or bad, but in different environments could have either negative or positive effects. Thus, if one lives in a malaria-stricken part of the world, natural selection gives a net advantage to having the sickle-cell trait. Other hemoglobin polymorphisms, such as thalassemias and hemoglobin C are also suspected to have arisen as a genetic means to reduce the burden of malaria.