As far as your argument for evolution neither argument is valid. There is no reason whatever why a creator could not or would not use the same type
of genetic code based on DNA for all of his created life forms. This is evidence for Intelligent design not evolution, let me explain.
The most frequently cited example of DNA commonality is the human/chimpanzee similarity, noting that chimpanzees have more than 90% of their DNA the
same as humans. This is hardly surprising, however considering the many physiological resemblances between people and chimps. Why shouldnt they
have similar DNA structures in comparison, say, to the DNA differences between men and spiders?
Similarities, whether of DNA, anatomy, embryonic development, or anything else are better explained in terms of a common creator than by evolutionary
relationships. The great differences between organisms are of greater significance than the similarities, and evolutionism has no explanation for
these if they all are assumed to have had the same ancestor in the primordial soup. How could these great gaps between kinds ever arise at all, by
any natural process?
The apparently small differences between human and chimp DNA obviously produce very great differences in their respective anatomies, intelligence,
etc. The superficial similarities between all apes and humans are nothing compared to the differences in any practical or observable sense.
Nevertheless, evolutionists, having largely become disenchanted with the fossil record as a witness for evolution because of the ubiquitous gaps where
there should be transitions, recently have been promoting DNA and other genetic evidence, such as Cytochromes, as proof of evolution. However, as
noted by anthropologist Roger Lewin in his book Family Feud on page 39, the genetic evidence contradicts the fossil record.
The overall effect is that molecular phylogenetics is by no means as straightforward as its pioneers believed. The Byzantine dynamics of
genome change has many other consequences for molecular phylogenetics, including the fact that different genes tell different stories.
Summarizing the genetic data from humans Geneticist N.A. Takahata in his book Genetic Perspective on the Origin and History of Humans on page 343
notes
Even with DNA sequence data, we have no direct access to the processes of evolution, so objective reconstruction of the vanished pase can be
achieved only by creative imagination.
Dr. Lewin also notes in his book that genetic data is inconsistent with the fossil record but also with the comparative morphology or the creatures.
In this quote taken from page 36 Lewin notes just a few typical contradictions yielded by this type of evidence in relation to more traditional
Darwinian proof
The elephant shrew, consigned by traditional analysis to the order insectivores is in fact more closely related to the true elephant. Cows are
more closely related to dolphins than they are to horses. The duck billed platypus is equal evolutionary footing with kangaroos and
koalas.
There are many many even more bizarre comparisons yielded by this approach.
In respect to abiogenesis it could have never happened because it would violate the second law of thermodynamics. The law of increasing entropy
stipulates that all systems in the real world go downhill, as it were, toward disorganization and decreased complexity.
The law of entropy is, by any measure, one of the most universal, best proved laws of nature. It applies not only in physical and chemical systems in
fact, in all systems without exception.
In their article A fresh look at Entropy and the second law of Thermodynamics in physics today April 2000 edition, page 32 if you care, EH Lieb and
Jakob Yngvason point out the completeness of the law.
No exception to the second law of thermodynamics has ever been found not even a tiny one. Like conservation of energy, or the first law of
thermodynamics, the exsistence of a law so precise and so independent of details of models must have a logical foundation that is independent of the
fact that matter is composed of interacting particles.
Practically all evolutionary biologists are reductionists, that is they insist that there are no vitalist forces in living systems, and that all
biological processes are explicable in terms of physics and chemistry. That being the case, biological processes also must operate in accordance with
the laws of thermodynamics, and practically all biologists acknowledge this.
Evolutionists commonly insist however, that abiogenesis is a fact anyways, and that the conflict is resolved by noting that the earth is an open
system with the incoming energy from the sun able to sustain evolution throughout the geological ages in spite of the natural tendency of all systems
to deteriorate toward disorganization.
The fact is that the best known and most fundamental equation of thermodynamics says that the influx of heat into an open system will increase the
entropy of the system rather than decrease it. All known cases of decreased entropy in open systems involve a guiding program of some sort and one or
more energy conversion mechanisms.
Also, the secon law rules out evolution altogether because evolution has neither a guiding program or an energy conversion mechanism. Mutations are
not organizing mechanisms, but disorganizing. They are commonly harmful, sometimes neutral, but never beneficial(at least as far as observed
mutations are concerned). Natural selection cannot generate order, but can only sieve out the disorganizing mutations presented to it, thereby
conserving the exsisting order, but never generating new order. In principle, it may be barely conceivable that evolution could occur in open
systems, in spite of the tendency of all systems to disintegrate sooner or later. But no one yet has been able to show that it actually has the
ability to overcome this universal tendency, and that is the basic reason why there is still no bona fide proof evolution, past or present.
[Edited on 4-5-2004 by BlackJackal]