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Evolutionary Tree
August 19, 2016 at 9:22 am
I was reading last night about incongruence in genetic phylogeny last night. As part of the comments in the blog someone mentioned something that I had not heard of before, It seemed like it may be difficult to look up, so I thought that I would ask here, and see if anyone with more knowledge than I could confirm or deny this.
The claim was that in doing a phylogenetic analysis concerning that the DNA that are used for paternity tests in humans, are not used in phylogenetic tree's comparing humans and chimps (because they would not match).
There are a number of biologist and experts on this blog, but I wasn't familiar with this poster, and didn't want to jump to conclusions based off of a single source. Can anyone confirm or deny this.
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RE: Evolutionary Tree
August 19, 2016 at 9:27 am
I honestly don't understand your question because of the garbled grammar.
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RE: Evolutionary Tree
August 19, 2016 at 9:30 am
(August 19, 2016 at 9:27 am)Alex K Wrote: I honestly don't understand your question because of the garbled grammar.
Sorry, I wrote that fairly quickly.
Here is the comment I was referring to.
Quote:Paternity tests do not use the same DNA sequences that phylogenetics use. The DNA sequence(s) that demonstrate paternity wouldn’t show any relationship to chimps.
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RE: Evolutionary Tree
August 19, 2016 at 9:34 am
(This post was last modified: August 19, 2016 at 9:35 am by The Grand Nudger.)
Could we get a link to the blog with that, for context? Or the source from which the blogger drew the statement?
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RE: Evolutionary Tree
August 19, 2016 at 9:36 am
(This post was last modified: August 19, 2016 at 9:36 am by Alex K.)
Oh I see. I don't know whether that is true, but if I had to guess - it *might* make sense that maybe paternity tests deliberately use sequences which differ particularly strongly among the human gene pool in order to more clearly see family relations pop out. These samples then artificially overstate the differences between individuals, and so would return an falsely exaggerated distance in the relationship to chimps, if one used them naively for a comparison. But that's really just a guess, I don't know how paternity tests are done.
The fool hath said in his heart, There is a God. They are corrupt, they have done abominable works, there is none that doeth good.
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RE: Evolutionary Tree
August 19, 2016 at 9:38 am
(August 19, 2016 at 9:34 am)Rhythm Wrote: Could we get a link to the blog with that, for context?
http://www.uncommondescent.com/evolution...ies-today/
It is comment #5 that I am referring to, although I don't know that context is going to help a lot.
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RE: Evolutionary Tree
August 19, 2016 at 9:39 am
Hmm. In a DNA paternity test, they are looking for gene sequences that are copied 'verbatim' from the person who is suspected of being the biological father. It gets less accurate with each generation removed from the child; so it's less accurate for determining grandparents and still less accurate for determining great-grandparents, and so on. It would be useless for establishing 'paternity' over thousands of generations.
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RE: Evolutionary Tree
August 19, 2016 at 9:40 am
Is the implication that we would not share common ancestry with primates? I think that is what I am reading. Our resident biologist TheRocketSurgeon could probably inject some wisdom on the matter. I haven't seen him around lately.
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RE: Evolutionary Tree
August 19, 2016 at 9:43 am
PETE_ROSE Wrote:Is the implication that we would not share common ancestry with primates? I think that is what I am reading. Our resident biologist TheRocketSurgeon could probably inject some wisdom on the matter. I haven't seen him around lately.
He got upset and left. Don't know if he'll be back. We need a new biologist.
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RE: Evolutionary Tree
August 19, 2016 at 9:44 am
(August 19, 2016 at 9:40 am)PETE_ROSE Wrote: Is the implication that we would not share common ancestry with primates? I think that is what I am reading. Our resident biologist TheRocketSurgeon could probably inject some wisdom on the matter. I haven't seen him around lately.
Yes, his knowhow would be very useful now. He unfortunately ragequit a few months ago...
The fool hath said in his heart, There is a God. They are corrupt, they have done abominable works, there is none that doeth good.
Psalm 14, KJV revised edition
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