Adding information to the genome.

Who cares? It is irrelevant, the genome does not give a rat's ass how "complex" it is. Mutations that reduce complexity and increase survivability are going to be preserved through natural selection just as much as those that increase complexity and increase survivability."Complexity" can be preserved through natural selection for completely different reasons. For instance, suppose there is a mutation that causes a long string of random, non-functional DNA to be inserted harmlessly into the genome. This mutation happens to take place in an organism that has a completely different mutation that is simply a modification of existing DNA (no change in "complexity"), but which makes the organism much more likely to survive and reproduce. Behold, natural selection is preserving a lot of completely non-functional DNA, yet increasing "complexity" by your measurement.That example could have a later organism that deletes the useless DNA, and also has another different survival advantage modification. That would be a decrease in "complexity" and yet natural selection still preserves it.The question is pointless, nearly meaningless, and completely irrelevant to the issue.

It is irrelevant because DNA does not need to function to be "seen" by natural selection. For instance, junk DNA can act as a buffer to protect functional DNA from damage, and it would confer an evolutionary advantage.What you are *trying* to imply is that natural selection is a process that either sees something happening in DNA and conserves it, or does not see something happening and ignores the change. The question is irrelevant because natural selection does not work that way. As a genetic change becomes less dramatic the effects of other changes begin to dominate the survival of the organism, but natural selection still operates on the minor change. It operates on it regardless of functionality, so requiring it to "function" is completely arbitrary on your part.DNA does not need to be "functional" to be selected for, so your question is irrelevant. It is like asking how black a car tire has to be to be put on a car; the most proper answer is that the question is irrelevant to determining if it goes on the car or not.

There are mutations. Some are functional, some are not. Some are selected for, some are selected against. I would expect the functional and non-functional genome to grow over time, assuming it provided an evolutionary advantage.Perhaps you could be more specific with your question?