Lets say we have 100 carriers, 50 male, 50 female. Then we have 100 with full-blown SCA, 50 male, 50 female.
This is incorrect. A "carrier" is one who is heterozygotic for the trait. That is they carry only 1 copy of the SCA gene and do NOT get full blown SCA. They do, however, do better in a malarial enviroment.
ABE
Heterozygous becomes homozygous in the offspring and that's when people start dying. I'm not saying its a pandemic, I'm just saying that if people from African, Hispanic, and certain Meditteranean decent continue to procreate in that specific group, it has a much greater chance of at least bcoming a significant problem.
In a non malarial environment people do start dying (without medical treatment). However in a malarial environment a balance is reached. The proportion that carry the SCA gene depends on the selective pressure of the malaria (it is rather high).
You are mixing up the two different environments. In a malarial environment the facts show that you are wrong about what happens.
This message has been edited by NosyNed, 05-09-2006 12:23 PM