Point mutations aren’t the only way for new things to be produced. You can also recombine large chunks and domains together from multiple previous genes.
Hell, there are even examples of genes evolving via a frame-shift that knocks the 3-base frame of a gene off by one producing a gobbeldygook protein that selection then acts upon...
Point mutations aren’t the only way for new things to be produced. You can also recombine large chunks and domains together from multiple previous genes.
Hell, there are even examples of genes evolving via a frame-shift that knocks the 3-base frame of a gene off by one producing a gobbeldygook protein that selection then acts upon...