Yesterday I issued a challenge to the coterie of Darwinist commentors on this modest blog who are having a fit over the ENCODE data and the long-overdue implosion of "junk DNA".
Why the fit? Junk DNA is a cornerstone of Darwinist mythology, and among ideologues myths don't die easy.
How, you may ask, can Darwinists hope to deny such overwhelming scientific evidence-- 30 papers in the leading genetics journals written by 400 of the best molecular geneticists in the world-- that "junk DNA" is junk science?
Here's how: Darwinists are dissembling and spinning like tops on what constitutes "junk DNA" and what "functional" means with reference to DNA.
No reason for surprise. The rhetorical trademark of Darwinism is circumlocution. Darwinists are loathe to define things consistently and with precision. Think how many different ways 'evolution' is used, or 'selection' or 'random'. Darwinism is the creation myth of atheists, but it prevails in a scientific culture, which is ostensibly devoted to relentless testing of hypotheses. Darwinism would evaporate overnight if actually tested against evidence (do you really think that the genetic code came about because 'things changed and survivors survived?), so to maintain their creed Darwinists must keep it all vague. They are very careful about definitions-- not to make them, but to avoid them.
The only way Darwinism gets to survive as a scientific hypothesis is if Darwinists get to define the hypothesis anew with each challenge.
So on the junk DNA controversy I have asked my Darwinist interlocutors to define these terms:
No one has taken up the challenge, or at least no one has taken it up well. No surprise. When you ask a Darwinist just what he means, he insults you, sneers, throws chaff, and, if all else fails, he runs. The first three have been used to no effect, so here it's number four.
Only bachfiend ventured into rhetorical clarity. He answered:
Bach's definition of "junk DNA" is nonsense. DNA that has "no current use" need not be junk. DNA that regulates embryological development may be turned off in maturity. But it's by no means "junk". DNA that regulates elaboration of a stress hormone may be turned off when you have no stress, but it's not junk. DNA that mediates ovulation may be turned off after menopause. But it's not junk.
Bach's definition of "function" is worse than nonsense. He asserts that if you delete (remove) the DNA and the organism changes, then it had a function. By corollary, if you delete the DNA and the organism doesn't change, it didn't have a function.
But that's hilarious nonsense. If you delete the DNA that regulated embryological development in an adult human cell, the cell might not change. But the embryological DNA certainly has a function. It's just that the function is not expressed at every moment.
And lack of cellular change after removal of DNA doesn't even mean that the DNA had no function at the time it was removed. Consider the analogy to human organs. You can remove a kidney, or half of the liver, or a lung, or a large part of the thyroid gland, or many feet of the intestine, or even major parts of the lobes of the brain (I do it regularly), and the function of the body doesn't change. You have normal excretion of urine with only one kidney, normal liver function with half your liver, normal respiration with only one lung, normal digestion with only part of your intestine, normal thyroid function with only part of your thyroid, and normal brain function even with parts of your brain removed.
That does not mean the your removed kidney or liver or lung or thyroid or brain tissue had no function. Each of those erstwhile organs had plenty of function.
Removal of a portion of DNA, just like removal of a portion of some organs, may or may not impair function. There is redundancy and adaptation in biology. Removal of DNA, without a change in the cell, is not evidence that the DNA had no function.
You may ask yourself at this point: are Darwinists really that stupid?
Well...
So here's my answer to my own questions, as promised:
I like the Darwinian definition of junk DNA: junk DNA is archaic DNA that arose by mutation or similar event and that does not contribute to nor impair the functioning of the cell.
I like holding Darwinists to their own definitions, although they fight like cats getting a bath.
Junk means not contributing to function. Junk DNA and functional DNA are mutually exclusive. Each 'unit' of DNA is either, but never both.
In working terms, I think that ENCODE criteria for function is reasonable: function is "specific biochemical activity" on one of several standard assays for "RNA, “broad” histone modifications, “narrow” histone modifications, DNaseI hypersensitive sites, Transcription Factor ChIP-seq peaks, DNaseI Footprints, Transcription Factor bound motifs, and finally Exons."
I believe that nearly all DNA is functional. Vanishingly little is junk. I believe this for two reasons:
1) I believe that DNA is created by an intelligent Agent, who eschews 'junk'.
2) I believe the current state of the science favors the view that the vast majority of DNA is functional and not junk.
I think those are pretty good answers to my questions, but then, as you can see, we intelligent design folks don't have particularly impressive competitors.
Why the fit? Junk DNA is a cornerstone of Darwinist mythology, and among ideologues myths don't die easy.
How, you may ask, can Darwinists hope to deny such overwhelming scientific evidence-- 30 papers in the leading genetics journals written by 400 of the best molecular geneticists in the world-- that "junk DNA" is junk science?
Here's how: Darwinists are dissembling and spinning like tops on what constitutes "junk DNA" and what "functional" means with reference to DNA.
No reason for surprise. The rhetorical trademark of Darwinism is circumlocution. Darwinists are loathe to define things consistently and with precision. Think how many different ways 'evolution' is used, or 'selection' or 'random'. Darwinism is the creation myth of atheists, but it prevails in a scientific culture, which is ostensibly devoted to relentless testing of hypotheses. Darwinism would evaporate overnight if actually tested against evidence (do you really think that the genetic code came about because 'things changed and survivors survived?), so to maintain their creed Darwinists must keep it all vague. They are very careful about definitions-- not to make them, but to avoid them.
The only way Darwinism gets to survive as a scientific hypothesis is if Darwinists get to define the hypothesis anew with each challenge.
So on the junk DNA controversy I have asked my Darwinist interlocutors to define these terms:
1) Define "junk DNA". Precisely. When you claim that most of the genome is junk (and you have claimed that for decades), what do you mean. Exactly. No weasel words. What is junk. What is not junk.
2) Define "function", in terms of DNA. What does it mean for DNA to be functional?
3) What relation does "junk" bear to "function"? Be precise. Can DNA be functional (by your definition) and still be "junk"?
4) How much of the human genome is "junk"? How much is "functional"? Explain what you mean.
Only bachfiend ventured into rhetorical clarity. He answered:
If you want a definition, I'd define 'junk' as having no current use, but isn't discarded, because it might turn out to have a use later (as an analogy, I have a lot of junk lying around the house, in contrast to garbage, which I discard immediately).
Having a function means that if you delete the DNA, then it causes a change in the organism.
Bach's definition of "junk DNA" is nonsense. DNA that has "no current use" need not be junk. DNA that regulates embryological development may be turned off in maturity. But it's by no means "junk". DNA that regulates elaboration of a stress hormone may be turned off when you have no stress, but it's not junk. DNA that mediates ovulation may be turned off after menopause. But it's not junk.
Bach's definition of "function" is worse than nonsense. He asserts that if you delete (remove) the DNA and the organism changes, then it had a function. By corollary, if you delete the DNA and the organism doesn't change, it didn't have a function.
But that's hilarious nonsense. If you delete the DNA that regulated embryological development in an adult human cell, the cell might not change. But the embryological DNA certainly has a function. It's just that the function is not expressed at every moment.
And lack of cellular change after removal of DNA doesn't even mean that the DNA had no function at the time it was removed. Consider the analogy to human organs. You can remove a kidney, or half of the liver, or a lung, or a large part of the thyroid gland, or many feet of the intestine, or even major parts of the lobes of the brain (I do it regularly), and the function of the body doesn't change. You have normal excretion of urine with only one kidney, normal liver function with half your liver, normal respiration with only one lung, normal digestion with only part of your intestine, normal thyroid function with only part of your thyroid, and normal brain function even with parts of your brain removed.
That does not mean the your removed kidney or liver or lung or thyroid or brain tissue had no function. Each of those erstwhile organs had plenty of function.
Removal of a portion of DNA, just like removal of a portion of some organs, may or may not impair function. There is redundancy and adaptation in biology. Removal of DNA, without a change in the cell, is not evidence that the DNA had no function.
You may ask yourself at this point: are Darwinists really that stupid?
Well...
So here's my answer to my own questions, as promised:
1) Define "junk DNA". Precisely. When you claim that most of the genome is junk (and you have claimed that for decades), what do you mean. Exactly. No weasel words. What is junk. What is not junk.
I like the Darwinian definition of junk DNA: junk DNA is archaic DNA that arose by mutation or similar event and that does not contribute to nor impair the functioning of the cell.
I like holding Darwinists to their own definitions, although they fight like cats getting a bath.
2) Define "function", in terms of DNA. What does it mean for DNA to be functional?Function, in terms of DNA, refers to DNA that contributes to the natural activities of the cell-- replication, nutrition, excretion, movement, etc. The function need not be continuous. The function may have been in the past, or in the future, or may even be only potential, in response to an environmental stimulus that may or may not occur. DNA that can make melanin is 'functional', even if you never get a tan.
3) What relation does "junk" bear to "function"? Be precise. Can DNA be functional (by your definition) and still be "junk"?
Junk means not contributing to function. Junk DNA and functional DNA are mutually exclusive. Each 'unit' of DNA is either, but never both.
In working terms, I think that ENCODE criteria for function is reasonable: function is "specific biochemical activity" on one of several standard assays for "RNA, “broad” histone modifications, “narrow” histone modifications, DNaseI hypersensitive sites, Transcription Factor ChIP-seq peaks, DNaseI Footprints, Transcription Factor bound motifs, and finally Exons."
4) How much of the human genome is "junk"? How much is "functional"? Explain what you mean.
I believe that nearly all DNA is functional. Vanishingly little is junk. I believe this for two reasons:
1) I believe that DNA is created by an intelligent Agent, who eschews 'junk'.
2) I believe the current state of the science favors the view that the vast majority of DNA is functional and not junk.
I think those are pretty good answers to my questions, but then, as you can see, we intelligent design folks don't have particularly impressive competitors.

