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Old 12-08-2008, 18:47   #1
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Originally Posted by michaelundinaeichhorn View Post
As far as I know this can only be done by one labaratory in Poland and not as easily as you should think.

Ina
Those methods are well known among population genetics researchers, the fact that they are mostly not publicly available is another story. With allelic/haplotypic frequencies of sub-species (Italian, American etc.) one can determine the population origin of an individual. In addition DNA microsatellites evolutionary models are more and more accurate and some suitable markers are available, so we can also have an estimation of the divergence degree.
The fact that these methods are mostly not publicly available is owing to time and money, for example I had the confirmation that the laboratory I told about can provide these methods (they won't because have not the time for that), also they are not astonished that "Antagène" (the French laboratory that provide DNA tests) does not provide it.
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Old 19-08-2008, 13:22   #2
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TIn addition DNA microsatellites evolutionary models are more and more accurate and some suitable markers are available, so we can also have an estimation of the divergence degree.
Yes, but this works (as far as I know) for populations diverged for some significant time. As all CSW are actually descendants of one female wolf, and several female GSD, and as the first pairing was done some 50 years ago, you would get results that some percent of CSW population are 100% GSD and other percent of CSW are 100% carpathian wolf, and the percentage of GSD or wolf in the population of CSW would depend only on the relative amount of female lines used, so in theory if only male descendants of the wolf Brita were used, than according to mitochondria only GSD are present, or on the other hand, if only male descendants of the GSD females were used, than we have only wolf mitochondria...
Of course assuming that actually mitochondria from sperm do not play role.

Does anybody know, if there was found any significant difference in overall DNA between wolf and dogs other than genes for skin/coat/eye pigmentation?
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Old 19-08-2008, 19:37   #3
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Yes, but this works (as far as I know) for populations diverged for some significant time. As all CSW are actually descendants of one female wolf, and several female GSD, and as the first pairing was done some 50 years ago, you would get results that some percent of CSW population are 100% GSD and other percent of CSW are 100% carpathian wolf, and the percentage of GSD or wolf in the population of CSW would depend only on the relative amount of female lines used, so in theory if only male descendants of the wolf Brita were used, than according to mitochondria only GSD are present, or on the other hand, if only male descendants of the GSD females were used, than we have only wolf mitochondria...
Of course assuming that actually mitochondria from sperm do not play role.
To get ride of sex biaised inheritance mtDNA is used in combination with nuclear Y-chromosome and autosomal markers. Furthermore microsatellites are VERY more polymorphic than any other makers, this solves the "signifiant time" needed.

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Does anybody know, if there was found any significant difference in overall DNA between wolf and dogs other than genes for skin/coat/eye pigmentation?
I guess this is not the way to look for, promising ways are modifications of mRNA expression and genetic regulatory networks.
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Old 20-08-2008, 10:42   #4
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Originally Posted by saschia View Post
Yes, but this works (as far as I know) for populations diverged for some significant time. As all CSW are actually descendants of one female wolf, and several female GSD, and as the first pairing was done some 50 years ago, you would get results that some percent of CSW population are 100% GSD and other percent of CSW are 100% carpathian wolf, and the percentage of GSD or wolf in the population of CSW would depend only on the relative amount of female lines used, so in theory if only male descendants of the wolf Brita were used, than according to mitochondria only GSD are present, or on the other hand, if only male descendants of the GSD females were used, than we have only wolf mitochondria...
Of course assuming that actually mitochondria from sperm do not play role.

Does anybody know, if there was found any significant difference in overall DNA between wolf and dogs other than genes for skin/coat/eye pigmentation?
If you need you can find many reference papers from http://lib.bioinfo.pl/
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Old 23-09-2008, 14:27   #5
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Good review which gather available computer tools: http://darwin.eeb.uconn.edu/eeb348/s...06/nrg1904.pdf

(Some of these tools was used in the recent work "Conservation Genetics of Wolves and their Relationship with Dogs" (Uppsala university).)
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