![](https://www.rickilewis.com/rails/active_storage/representations/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBeEZlQVE9PSIsImV4cCI6bnVsbCwicHVyIjoiYmxvYl9pZCJ9fQ==--42332c2a980f0942586232121747c4e458931319/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaDdCem9MWm05eWJXRjBTU0lJY0c1bkJqb0dSVlE2RkhKbGMybDZaVjkwYjE5c2FXMXBkRnNIYVFMZ0FXa0M0QUU9IiwiZXhwIjpudWxsLCJwdXIiOiJ2YXJpYXRpb24ifX0=--617370b41d3cdfefd86420da01fffccd527de16e/Brass_scales_with_flat_trays_balanced.png)
Balanced polymorphism retains mutant genes in populations when they protect against other conditions.
While pharmaceutical companies focus on drug discovery for Ebola virus disease, a powerful clue is coming from a rare “Jewish genetic disease” that destroys the brain. People with Niemann-Pick C1 disease can’t get Ebola, adding to the list of disease pairs that arise from a fascinating form of natural selection.
Balanced polymorphism, aka heterozygote advantage, is a terrific illustration of ongoing evolution. And it pits the human body against all sorts of invaders – prions, viruses, bacteria, protozoa, and fungi. Read More
Balanced polymorphism, aka heterozygote advantage, is a terrific illustration of ongoing evolution. And it pits the human body against all sorts of invaders – prions, viruses, bacteria, protozoa, and fungi. Read More