Review Genetics 2. Sickle Cell Anemia - balanced polymorphism 4. Animal Evolution 6. Using the example of Tay-Sachs disease, discuss the operation of genetic processes among human populations.
Malaria is a blood parasite carrier by mosquitos.
Malarial parasites cannot infect sickle cells. Taxonomy is an inexact science, there is debate over how to divide living organisms into species. The environment of a species and its adaptation to that environment. They are separated by a barrier which reduces gene flow. Differences accumulate in gene frequencies.