Genome replication mistakes occur rarely but naturally. The covid virus has a proofreading enzyme, but it isn't foolproof. Selective pressure is selective, not

Genome replication mistakes occur rarely but naturally. The covid virus has a proofreading enzyme, but it isn't foolproof. Selective pressure is selective, not creative. With more complex organisms, its more, well, complex because they can do things like horizontal gene transfer. [EDIT]: But even here selective pressures just impose consequences, they don't cause HGT