Quote:
Originally Posted by charles brough
During the almost two hundred thousand years we have been Homo Sapiens, anthropologists have been unable to demonstrate any significant further biological evolution.
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Hi Charles,
We were given the example of Sickle Cell Anaemia (SCA) in University Biology.
While the normal percentage of SCA in any population is between 1 and 2 percent there are areas in Africa where the percentage is between 20 and 40 percent.
The reason for this is the Tsetse Fly and Sleeping Sickness.
When a person who has SCA gets sleeping sickness their blood cells go sickle shaped and they get very sick. This prevents the disease from spreading and eventually killing them so that they only have to recover from the SCA.
This may not exactly be biological evolution but it is a good example of the basic premise of evolution.
