OK....I promised a tutorial.....comin' right up:
9. How exactly, could we use
the molecular structure of DNA to compare organisms for evolutionary relationships?
Well, the idea is to compare
the sequences of the nucleotide subunits: tiny differences in sequence mean closer relationship, larger differences, less close connections.
Makes sense?
a. And...the beauty of this kind of study is that
it uses quantitative measurement. Think how much easier this is than looking at two skulls and judging degrees of similarity.
It's a homerun.......right?
10. Not quite:
first of all, it is not easy to decide how to line up two different molecules of such immense length....I mean, at what point along the DNA do we consider similarities?
Secondly, it is not true that an alteration of one subunit in one place has a similar effect as an alteration in another.
Quick example of what changing a single nucleotide will do the genetic message:
a.
The nucleotides are 'read' in groups of three...Let's say that this short sentence is the information needed for the cell to build a protein:
"The sun was hot but the old man did not get his hat."
Simple, easily understood.....
b.
That sentence represents a gene, OK?..I know, much too short...but it's just an example!
Let's assume that each letter corresponds to a nucleotide base, and each word represents a
codon.
The definition of 'codon:' a unit that consists of three adjacent bases on a DNA molecule and that determines the position of a specific amino acid in a protein molecule during protein synthesis.
How do Cells Read Genes?
So...
.a mutation would leave out, or add, any one letter in the message, and then it is not the same message at all...
the 'mutation' makes the DNA meaningless at best....or lethal at worst!
Let me show you how: drop the first letter, and watch what that message becomes:
"hes unw ash otb utt heo ldm and idn otg eth ish at."
Now
apply the idea to the huge DNA molecule....and one can see that Darwin's premise, alterations in the DNA would produce a new species, doesn't do that at all.
Remember: the National Academy of Sciences says "The evidence for evolution from molecular biology is overwhelming and is growing quickly."
Hardly.
Who's zoomin' who?
"Again your complete stupidity is showing!"
Really?
Can we examine that?
Well....I am truly gratified to see that my posts have forced you to attempt to lean the basics of genetics!
See....it's never too late to learn.
Bravo!
Let's review: the essence of this thread is that
Darwin's theory is flawed in numerous ways, and this thread points out two glaring flaws!
1.From the start,
fossil evidence was to be the proof of the theory. If that was successful, the shift to 'molecular evidence' would not have been necessary.
As the old saying goes..." The 13th chime of a clock, not only does it make no sense, but it calls into question the validity of the 12 chimes that preceded it."'
So....if the fossil attempt doesn't pan out.....what of the other '12 chimes," attempts to prove Darwin correct?
2. Darwin fans are clutching at straws....and turning to
DNA for proof is one of those straws.
First, note that
my posts are linked and documented, and sourced.
Secondly, a carful appraisal of
the material that you have provided will indicate that none of it refutes anything I've said.
3. Now, what have I said?
a. Attempts at providing DNA support is due to the failure of fossil proof.
b. DNA is an immense molecule and it's specific and
exact sequence is essential.
c. In order for Darwin's idea that random changes in the order of nucleotides produces viable organisms, well....
experiments have shown that this is almost never true.
This is because organisms that survive are suited for their environment...and any alteration makes them less suited.
d. Now...is it possible for random changes in the DNA to have accomplished the diversity of life we see today?
According to mathematicians.....no. Impossible
4. Wait....given millions of years.....you know....randomness....maybe?
No.
a. The time period from the Pre-Cambrian until we find all sorts of new organism, the Cambrian, is not one that allows both the creation of the specific DNA sequence by random mechanisms for each organ and body form,.....remember that these structures must occur in just the right order.
Based on the monumental changes in the life forms, there is
just too limited a time frame for said changes to have occurred!
This fact would weigh heavily
against the veracity of Darwin's thesis.
Here is the source of the problem:
'Before about 580 million years ago, most organisms were simple, composed of individual cells occasionally organized into colonies.... The Cambrian explosion, or Cambrian radiation, was the relatively rapid appearance, around 542 million years ago, of most major animal phyla, as demonstrated in the fossil record."
Cambrian explosion - Wikipedia, the free encyclopedia
Science admits to the mystery, the puzzle:
less than 40 million years to produce the 'Cambrian explosion' is not possible.
Worse news for Darwin fans:
b. Ratiometric analysis changed that:
"Currently, uranium-lead zircon geochronology is the most powerful method for dating rocks of Cambrian age. ... the Cambrian period began at approximately 544 million years ago ... The resulting compression of Early Cambrian time accentuates the rapidity of both the faunal diversification and subsequent Cambrian turnover.
Bowring, et. al., "Calibrating Rates of Early Cambrian Evolution." Calibrating rates of early Cambrian evolution
c. The explosion itself is now believed to be much shorter than thought, lasting
no more than 10 million years, and the main "period of exponential increase of diversification" lasting only 5 to 6 million years. Bowring, Op. Cit.
d. In fact, the former 20 to 40 million year 'window' during this occurred was thought to be far too short a period for the natural, random changes into so many new structures and body organization to have occurred.....
....
now, the period has been shortened to lasting only 5 to 6 million years!
Darwin has run out of time!
So....I ask again:
why is Darwin pushed so hard in this society, when there is scant evidence for, and lots of evidence against???
Why?
Do you have an answer?
I do.
Guess whose birthday today is.....it's part of the answer to the above query.