Genetic support for IDiocy? Junk DNA?
This seems to be one of Glenn's favorite ways to lie to himself about
reality. Glenn keeps putting up a lot of IDiotic junk DNA junk from the
creationist news site that Luskin is using, but Glenn has no intention
of understanding anything about what he regurgitates. About the last
thing that Glenn wants to believe is that his designer is responsible
for transposons and retrovirus that jump around our genome, but how many
times has he put up transposon and retrovirus IDiotic denial stupidity?
That is how sad the ID scam junk DNA denial is.
Junk DNA is just the non coding DNA that doesn't have much of a function
in terms of the host that it exists in except holding the chromosomes
together. Regulatory sequences were never considered to be junk, and
were always known to be in among the non coding DNA sequences, but they
exist as minor fraction of that sequence. For humans over a third of
the genome can be attributed to transposons and retrovirus that have
inserted into our genome. Most of the "random" sequence of the genome
is likely derived from old transposon and retroviral sequences that have
degraded by mutation over time so that you can't recognize them as
transposons any longer. We can find transposons and retrovirus in
various stages of decay throughout the genome. Transposons and
retrovirus carry around their own transcriptional regulatory sequences
in order to replicate themselves, and when they insert near a gene they
can affect the regulation of that gene. McClintock was able to track
the movements of transposons by how they affected gene regulation, and
they were first thought to be part of the way genes were normally
regulated. Once we were able to study the sequences we found out that
they were DNA parasites, that could alter the regulation of genes and
destroy their function by moving into coding sequence. Most of the
transposable elements were found not to do much of anything, and that is
likely why they are tolerated by the host. When they do something it is
either selected for or against.
Currently in humans most new transpositions are identified by the
genetic diseases that they cause, and if they don't do anything we can't
detect new events unless we sequence the genome. That is a major reason
why Glenn will run in denial instead of attempt to understand what he
posts about them.
The IDiotic junk DNA argument has always been bogus for the simple
reason that the designer never needed all the junk. There are better
ways to change the regulation of genes. One of the last examples Glenn
put up was a retroviral insertion in the mouse lineage that altered the
expression of a gene useful in placental development. It turned out
that such a change had occurred in other mammlian lineages to alter the
expression of the same gene (including the human/primate lineage) but
the other lineages did it without retroviral insertion, and there were
other mammalian lineages that hadn't yet been able to evolve such an
altered gene regulation. The ID perps claim that their intelligent
designer can do anything and could have worked the change any way that
the designer wanted to do it. That is pretty much the reason why the
junk DNA IDiotic argument never amounted to anything worth discussing.