Into the Night
Verified User
I did. You were presenting no arguments. Just throwing insults and redirections.You would have to read the posts.
Finally an argument from you.Many mutations are "caught" and corrected by normal cellular processes in real time upon replication. On occasion a mutation may have both advantageous and disadvantageous outcomes simultaneously. Sickle Cell Disease for example. It is a one base mutation in the DNA sequence (recall that 3 bases code for one amino acid during translation) which results in the "wrong" amino acid being ultimately incorporated into the peptide (or protein, enzyme, coenzyme, etc.) during translation.
This mutational adaptation has evolved among the black population not of all of Africa, but of West Africa, where the mutation, detrimental as it is, confers immunity to the malaria prevalent there, thus natural selection has allowed it to persist in this population due to the phenotypically displayed immunity to malaria.
Yes, it has been observed that many mutations are corrected in this way. Your example of Sickle Cell disease mentions natural selection 'allowing' it to exist, as if it had some kind of intelligence. There is no 'natural selection' acting as an intelligence.
Sickle Cell is a variance (what you would call a 'mutation'?) among those of African heritage (they don't even have to have black skin!). Natural Selection has nothing to do with it.