Re: Evolution of DNA and Code.

On Mon, 4 May 2009 13:29:51 -0400 (EDT), MicroTech
<Henry.KO.Norman@xxxxxxxxx> wrote:

On May 4, 2:26=A0am, HW@. (Henry Wilson) wrote:

So what is the form and actual purpose of all that surplus DNA? Is nature=
a lot
smarter than we have previously believed? Has it outsmarted even our most
advanced computers by writing very complex instructions in quarternary co=
de?

The mind boggles at the possibilities...

It boggles, indeed! And speaking of "surplus"=A0and so called "junk"
DNA, does someone really claim that it is KNOWN that it is surplus/
junk? And if so, on what grounds?

Sequences that are maintained over evolutionary time are doing
something useful and are being maintained via natural selection
against the ever present effects of mutation. Protein genes are
maintained this way. There are also non-translated sequences being
maintained. These include RNA genes and RNA control sequences and many
sequences for which the useful function is not known. But most of the
genome DNA sequence is not maintained in any way. Some think it may
have a broad spacer function and prefer the term "spacer" rather than
"junk". But if these "junk" sequences were involved in anything useful
they would be maintained over evolutionary time. They are not. Changes
or mutations in these sequences have no effect on the organism
fitness.
William L Hunt
[snip...]

Henry Norman




.

Relevant Pages

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