stevevw
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- Nov 4, 2013
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I am no expert on genetics but from what I understand and have read junk DNA plays a vital role in working with coding DNA to make living features, systems and structures. Evolution likes to say that most of our DNA is junk or left over remnants from the past but it seems a lot of it is active and useful now. Maybe the junk DNA is what all living creatures have and it is something that is used to create the different creatures according to their individual requirements. A vast pool of genetic info that can turn on and off particular switches for particular applications in our genomes. Or it is associated connections that are needed that support our coding DNA for one reason or another. What may seem excessive and unnecessary is just part of being a living thing.we know what alot of junk DNA does, thats how we know they ARE junk DNA, AKA broken genes for things our ancestors needed but we don't, a good chunk of our DNA is devoted to smells that only our ancestors and deep ancestors needed. Why is it we carry genes that not even other apes use but further back mammals or reptiles use?
Why do humans contain the gene that would make it impossible for us to speak, but gives the great apes their jaw strength?
Afterall this complex and amazing code for life is so tiny and delivered into package in which a teaspoon full would be more info that all our greatest computer programs. So the amount of genetic info in our DNA doesn't really matter. What scientists see as leftover remnants or evidence for the evolution of our genes maybe just what has always been there. The only connection are that we all have a similar blueprint so we all will have bits of each others code that isn't being used according to what is needed or the particular features that are needed for each environment. There is a certain level of flexibility included in our DNA that allows us to vary with changing conditions.
The evidence seems to point towards living things having similar complexity from the beginning. The vast code for life was there from the very early stages of life on earth. The inconsistencies in the tree of life for molecular relations shows that there is more to how each animal gets its features than from evolution. Distant and unrelated animals have large sections of the same genes and some closely related animals according to evolution cannot be connected according to the similar features that the taxonomy predicted.
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