Perhaps not exactly "junk dna" but you are right in your thinking about gene duplications... duplications are thought to promote "neofunctionalization" (a new f

Perhaps not exactly "junk dna" but you are right in your thinking about gene duplications... duplications are thought to promote "neofunctionalization" (a new function) or "subfunctionalization" (specialization). See wikipedia [1] for an overview. [1] https://en.wikipedia.org/wiki/Gene_duplication#As_an_evolutionary_event https://en.wikipedia.org/wiki/Gene_duplication#As_an_evoluti...