, 14 February 2006 (UTC) 

 :Resistance to diseases is not the result of mutation. After being infected with a disease, our immune system produces specific antibodies, so that if that virus or bacterium returns the antibodies can destroy it instantly. As for the next generation, the genes of the parents get passed along with the immune system's imformation of the disease that affected the parent.   
 :No, not all individuals die from tumors caused by bad mutations, most survive provided that they get the right treatment. But that's not the point. Tumors are not beneficial, are they? 
 :I really don't understand what you're talking about here. Our taste buds are naturally attracted to those things that taste sweet, so the "eat sugar gene" comes naturally.  21:16