Re: Challenge for Darwinists - Protein Synthesis

hersheyhv wrote:

Richard Forrest wrote:

Wall Of Sleep wrote:

Get it now?


No. I don't "get it". What evidence points to the variation in the
gene pool of 'humans' as being the result of random mutations as opposed
to the result of normal sexual reproduction?

Genes get spread through the gene pool by sexual reproduction. Mutation
creates new genes.


Actually, mutation *usually* produces new alleles (variants,
modifications) of old genes. Or (and this is evolutionarily important)
variants in the *regulation* of old genes.

The mutational events that *sometimes* produce new *genes* (defined by
gene locus rather than function) are duplications (including chimeric
duplications), insertions, and rearrangements. The number of new
*genes* that are required for evolutionary change is greatly
exaggerated by creationists. For example, the number of new *genes*
that were needed to make a human from the common ancestor with
chimpanzees can probably be counted on the fingers of one hand with
several fingers amputated. Changes in the *regulation* of old genes,
OTOH, will be somewhat more common and probably accounts for most of
the crucial differences. Interestingly enough, *regulatory* changes do
not involve long random walks before facing selective pressures.


Is all sexual reproduction
classified as "random mutation"?

Oh, for crying out loud! Do you seriously not understand the
difference between sexual reproduction, which is the melding of genes
from two individuals, and mutation, which is something which affects
those genes?


He got his sex education at a Christian School. A short lesson: Don't,
until you are married.


Actually it was at an "evolution-only" public school, and my point was that mutation and sexual reproduction were two different things. I wasn't asking if they are the same because *I thought* they were but rather because he was claiming they were (in a sense anyway).



When the very first human 'couple'
mated, they produced an offspring that differed from both of them.

There was no "first human couple".


Ah, but in Creationist logic, there is. Otherwise we would not keep
hearing that they will believe in evolution when they see a cat give
birth to a dog. The idea that a species evolving might be like the
evolution of a language like French or English, with no single pair of
inventors but only change over time in a population seems to flit
through their brain like a neutrino through the earth.


Where is the fossil evidence to support this?

There has to be a line somewhere. There has to be a point in time when the evolution of man crossed the species barrier to homo sapiens. It had to be crossed by both male and female - correct?
So whenever that magical species barrier was crossed, the first male and female to mate became the first human couple.





--
"Are we to believe that mere chance can accomplish that which has proven quite impossible for the enlightened scientist to achieve? I regard that notion as absurd!" John A. Davison, Ph.D. - AN EVOLUTIONARY MANIFESTO: A NEW HYPOTHESIS FOR ORGANIC CHANGE
http://www.uvm.edu/~jdavison/davison-manifesto.html

.

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