How could there be no junk DNA? There are plenty of inserted regions of repeating codons, between regions that are read (outside of replication). DNA replicators are very simple machines, they copy until they’re told to stop, I agree that any junk DNA in the human genome has been there for a very long time, but it’s not difficult to find single cell organisms that have introduced previously non-self DNA in their genome. If that DNA isn’t used besides replication then it’s junk is it not?
Also telomeres are pretty synonymous with junk DNA, until they aren’t, or is every shortening of the telomere removing information vital to a cells function?
How could there be no junk DNA? There are plenty of inserted regions of repeating codons, between regions that are read (outside of replication). DNA replicators are very simple machines, they copy until they’re told to stop, I agree that any junk DNA in the human genome has been there for a very long time, but it’s not difficult to find single cell organisms that have introduced previously non-self DNA in their genome. If that DNA isn’t used besides replication then it’s junk is it not?
Also telomeres are pretty synonymous with junk DNA, until they aren’t, or is every shortening of the telomere removing information vital to a cells function?