Natural Selection in Humans
The Malaria parasite can exert a selective pressure on populations. This pressure has led to natural selection for erythrocytes carrying the sickle cell hemoglobin gene mutation (Hb S)—causing sickle cell anaemia—in areas where malaria is a major health concern, because the condition grants some resistance to this infectious disease
Read more about this topic: Evolutionary Pressure
Famous quotes containing the words natural, selection and/or humans:
“And if anyone should think I am tracing this matter too curiously, I, who have considered it in various shapes, can only answer with Hamlet ... “Not a jot”; it being no more than the natural result of examining and considering the subject.”
—Sarah Fielding (1710–1768)
“The books for young people say a great deal about the selection of Friends; it is because they really have nothing to say about Friends. They mean associates and confidants merely.”
—Henry David Thoreau (1817–1862)
“All humans have a heart that can tell right from wrong.”
—Chinese proverb.
Mencius.