Both P-ter of Gene Expression and John Hawks have covered the new publication on blood type O and malaria resistance. This is a very well studied marker and very important to human evolution because it has been a major selective force on the human population.  I even isolated my own blood type alleles recently and I’m happy to confirm that I’m O for both alleles because this new paper says how blood type O is more resistant to malaria. 

Here’s the link to the paper, which is currently open access, “Blood group O protects against severe Plasmodium falciparum malaria through the mechanism of reduced rosetting.”