A few hundred years ago something like 40% of babies died either in childbirth or shortly after birth. Those 40% had a high mutation load or especially deleterious mutations. With modern medicine that 40% has been reduced to 1%. The mutations not only stay in the gene pool but accumulate. With each generation it gets worse and worse. What you're seeing is the end product with the latest generation being the worst.
A few hundred years ago something like 40% of babies died either in childbirth or shortly after birth. Those 40% had a high mutation load or especially deleterious mutations. With modern medicine that 40% has been reduced to 1%. The mutations not only stay in the gene pool but accumulate. With each generation it gets worse and worse. What you're seeing is the end product with the latest generation being the worst.
(post is archived)