Allow me to retort.
reconciliation said:
No geneticists? I think you could as well say no scientists, right?
That is not what I said. You are bearing false witness. You are lying.
reconciliation said:
you are suprisingly ignorant
Really. Hmmm an 18 year old is telling me that I am ignorant about matters genetic, despite my degree with Honours in Genetics and the fact that I am currently working with one of the leading functional genomics experts in Europe in order to obtain my PhD. In genetics. Hmmmm. Interesting.
reconcilation said:
Dr. Lee Spetner, a highly qualified scientist who taught information theory at Johns Hopkins University said: "All point mutations that have been studied on the molecular level turn out to reduce genetic information and not to increase it".
Ah, the scent of deliberate ambiguity (not to mention the fact it
is wrong, but I'll deal with that shortly). Look closely at the passage. "All point mutations that have been studied".
Look again. "All
point mutations that have been studied". Do you know what a point mutation is? I'm guessing no. I'm also guessing that Dr. Spetner has deliberately confused point mutation with
all other types of mutation.
Here is a sequence:
AGGCTGGACTAACGCGCGCGGGGCATTACACTAG
Here is the same sequence with a
point mutation:
AGGCTGGACTAACGCG
TGCGGGGCATTACACTAG
Is there anyone here who claims that there is an increase in information here? Nope. Good.
So the good doctor is correct, there is no increase in information from a point mutation. However, this has been quoted to try and confuse lay-people into believing that the same is true for
all mutations.
And anyway, the claim that all point mutations result in a loss of information is false. True, you may end up with truncated gene products or silenced genes, however you may also end up with altered proteins that are still functional, or it may be a silent mutation that results in no informational change
at all. So clearly, not all point mutations result in a loss of genetic information.
Now, moving on to the idea that all mutations result in a loss of information.
Hmmmm. Duplication and insertion mutations. The names should tell you something.
Anyway, I'll let you trawl through the 3706 pages of references from the link
here. I dare say some of the references won't be relevant but you'll find a few.
Such as:
Novel case of dup(3q) syndrome due to a de novo interstitial duplication 3q24-q26.31 with minimal overlap to the dup(3q) critical region.
Meins M, Hagh JK, Gerresheim F, Einhoff E, Olschewski H, Strehl H, Epplen JT.
Am J Med Genet. 2004 Nov 18.
Small de novo duplication in the repeat region of the TATA-box-binding protein gene manifest with a phenotype similar to variant Creutzfeldt-Jakob disease.
Shatunov A, Fridman E, Pagan F, Leib J, Singleton A, Hallett M, Goldfarb L.
Clin Genet. 2004 Dec;66(6):496-501.
Or this.
Or this (mentions gene duplication).
Or this.
Or this.
I'll let you find some more.
Some diseases that may be familiar are as a result of an increase in DNA that, in these particular cases, are detrimental.
Down's syndrome: you get an extra Chromosome 21 (Down's is also known as trisomy 21).
Huntington's: tri-nucleotide repeat sequence increases beyond a critical point causing disease.
Although these are examples of it causing disease, I picked them because I thought people might be familiar with the conditions. They show that yes, DNA can be added.
h2