You are thinking of introns. Their function is still not very well-known. https://en.wikipedia.org/wiki/Intron#Biological_functions_and_evolution https://en.wik

You are thinking of introns. Their function is still not very well-known. https://en.wikipedia.org/wiki/Intron#Biological_functions_and_evolution https://en.wikipedia.org/wiki/Intron#Biological_functions_an...