Coevolution

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Parasites connected to origin of sexual reproduction?

Sexual reproduction has high costs, but has strong resistance to parasite. Similarly, parasites need sex to compete with adapting community.

Eg. Potamopyrgus (water snail in N Zealand) can reproduce by asexual and sexual reproduction. Rate of se depends of the number of parasite

Sickle Cell anemia

Hereditary blood disorder due to misshape of red blood cells.

Heterozygous=Malaria Resistance

strong selection pressure of malaria that even partial resistance is selected for

Coevolution