A Complete Waste of Space

I find this interesting. "IF" evolution is a form of mutuation over the millenia, then explain to me the Bio chemical sequences of DNA replication that are specifically designed to prevent DNA mutations.

Evolution (also known as biological, genetic or organic evolution) is the change in the inherited traits of a population of organisms through successive generations. This change results from interactions between processes which introduce variation into a population, and other processes which remove it. As a result, variants with particular traits become more, or less, common. A trait is a particular characteristic, anatomical, biochemical or behavioural, that is the result of gene–environment interaction.

The main source of variation is mutation, which introduces genetic changes

DNA replication, the basis for biological inheritance, is a fundamental process occurring in all living organisms to copy their DNA. This process is "replication" in that each strand of the original double-stranded DNA molecule serves as template for the reproduction of the complementary strand. Hence, following DNA replication, two identical DNA molecules have been produced from a single double-stranded DNA molecule. Cellular proofreading and error toe-checking mechanisms ensure near perfect fidelity for DNA replication.

DNA polymerases are generally extremely accurate, making less than one error for every 10 to the 7th nucleotides added. Even so, some DNA polymerases also have proofreading ability; they can remove nucleotides from the end of a strand in order to correct mismatched bases. If the 5' nucleotide needs to be removed during proofreading, the triphosphate end is lost. Hence, the energy source that usually provides energy to add a new nucleotide is also lost

now I admit that my understanding of Biochemistry is minimal to non-existant. but what I've read states that there is a protein wash that runs over every strand of DNA during the replication process. if an error OR mutation is found then it is removed and replaced with the correct sequencer.

SO

how can there be mutuations that caused Evolution from Apes to Man if the Bio-chemical design of cellular proof reading was meant to prevent those mutations?

Replication errors happen in all living creatures.
As you grow, and repair yourself replication errors
can get out of control.
We call that cancer.
If a replication error occurs at the egg and sperm level it is unlikely it will survive
to grow to adulthood.
Even then the odds that it will be an advantageous error are even less.
Errors happen often, some on a large scale, like additional chromozones
as in Downs Syndrome (Mongaloid).

But a fortunate error that carrys an advantage will reproduce and can change
the entire species over many generations.

We humans do selective breeding selecting minor variations and mutations
in breeding animals and plants.
A look at Dogs will make for a good example.
100,000 years ago all Dogs were Wolves. Wolves can still be crossed with any Dog.
Another would be poultry, note that no wild Turkeys have such massive brests and weight.
All common 21th Century farm animals and most produce are geneticly altered by selective breeding.
Ever seen wild corn?
Corn quickly degenerates back to grass in a few generations if it is not carefuly polinated.

Humans have accelerated evolution in a big way by selective breeding.

Hope this helps.

HH

Darkhorse wrote:

Pudfark wrote:All of this makes me wonder? Missionaries or the Missionary position? Watching you fella's 69 this subject is past amusing....and akin to head butting a brick wall....a gentle suggestion is to step back, let your head clear....inspect the brick wall....and move on....in a Happy sort of way.....as was suggested earlier......not that I am or would take sides.......

And how would this differ from your political posts?

I would expect a better question from you, Darkhorse......however, the answer to this one is pretty simple.....religious discussions are base upon one's faith. Political discussions can be faith based and fact based.... Slick sorta holds to the faith side of the argument and I the fact side......How's that for an answer?

Cuda, to sum up your quotes and questions above:


1. what that one statement says is that the mechanism for READING DNA transcripts and translation into amino acids(hence proteins) is pretty foolproof.
2. What leads to mutation is the alteration of the nuclear DNA chain itself, thus leading to the polymerases(used for duplication into RNA or copies of the nuclear DNA). It happens all the time, frequently triggered by UV and other low-level radiation, but also by chemicals, viruses and sometimes by those low-frequency reading errors.

What seems to be getting in your way here are two key items. First, evolution doesn't occur in huge leaps, it is a long, long series of small changes, most of which are inperceptable. Most mutations have either no effect, or a negative effect on an organism. However, those which confer even the slightest competetive advantage over time will prevail in a species, as the members with that trait reproduce more successfully.
Secondly, you all seem not to realize how often DNA replication occurs in most species. Cells divide quite a few times, and every time they do, a mutation could occur. Imagine, if you will, someone sitting around for, say, a thousand years, flipping a coin every few seconds. At several points in time, it is statistically likely that he/she will flip heads 50 times in a row. Now, it seems, when one thinks of it, like a near-impossible feat, but if some act is repeated literally trillions upon trillions of times, amazing stuff occurs.

but if some act is repeated literally trillions upon trillions of times, amazing stuff occurs.

Exactly.

HH

Funny Thread.
I am here to say you are all wrong. Or at the very least partially wrong.
Carry on.

Now you know whut you been missing.....

Dawg wrote:Funny Thread.
I am here to say you are all wrong. Or at the very least partially wrong.
Carry on.

Buzz and wrong never mix.