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re: Missouri Bill Would Warn Parents of Evolution Boogeyman

Posted on 2/22/14 at 3:54 pm to
Posted by Roger Klarvin
DFW
Member since Nov 2012
46590 posts
Posted on 2/22/14 at 3:54 pm to
quote:

Total bullshite.


Your lack of understanding is staggering.

If the only way new genetic information could be added was through mutation of existing functional genes, evolution could not occur. It is only in combination with gene duplication and subsequent mutation in those genes (which is how orphan genes are created) that mutations allow for evolution to be possible.

It goes like this: Species A has a gene it requires for function which is then duplicated by complex molecular processes in a sect of that species in the process of speciation. That sect then has "more" genetic info not present in Species A as a whole. The duplicated gene then mutates to become functional in a different way apart from the original gene and serves a purpose in the subsect of species A. Things like this happen many times over many generations until we have a new species B unable to breed anymore with A. Upon genetic analysis, the now functional gene that was originally a duplication product is not present in Species A or any other species and would often be impossible to connect to Species A because of extensive mutation. In the process of other species evolving from B, this mutation is lost or rendered nonfunctional and is not present in species which speciate from it.

The same process can occur without duplication and merely the mutation of existing nonfunctional genes.

Every species on the planet has at least a few unique genes because of this.
This post was edited on 2/22/14 at 3:57 pm
Posted by mattloc
Alabama
Member since Sep 2012
4320 posts
Posted on 2/22/14 at 4:03 pm to
Your analysis fails in that these genes have no evolutionary homology or kinship to genes from other lineages.  How did they arise?  is the central question. Also called “taxonomically restricted genes” your attempt to confuse the issue with your simplistic erroneous examples is laughable

Posted by NC_Tigah
Carolinas
Member since Sep 2003
124343 posts
Posted on 2/22/14 at 4:22 pm to
quote:

Your lack of understanding is staggering.
I am not understanding of folks who intimate they know things they actually don't. Especially when that intimation involves science.

Divergent Evolutionary and Expression Patterns between Lineage Specific New Duplicate Genes and Their Parental Paralogs in Arabidopsis thaliana
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