Unequal Contribution of Sexes in the Origin of Dog Breeds
Dogs (Canis familiaris) were domesticated from the gray wolf (Canis lupus) at least 14,000 years ago, and there is evidence of dogs with phenotypes similar to those in modern breeds 4000 years ago. However, recent genetic analyses have suggested that modern dog breeds have a much more recent origin,...
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ftpubmed:oai:pubmedcentral.nih.gov:1456210 2023-05-15T15:50:29+02:00 Unequal Contribution of Sexes in the Origin of Dog Breeds Sundqvist, A.-K. Björnerfeldt, S. Leonard, J. A. Hailer, F. Hedhammar, Å. Ellegren, H. Vilà, C. 2006-02 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1456210 http://www.ncbi.nlm.nih.gov/pubmed/16219789 https://doi.org/10.1534/genetics.105.042358 en eng Copyright © 2006 by the Genetics Society of America http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1456210 http://www.ncbi.nlm.nih.gov/pubmed/16219789 http://dx.doi.org/10.1534/genetics.105.042358 Copyright © 2006 by the Genetics Society of America Investigations Text 2006 ftpubmed https://doi.org/10.1534/genetics.105.042358 2013-08-31T01:16:26Z Dogs (Canis familiaris) were domesticated from the gray wolf (Canis lupus) at least 14,000 years ago, and there is evidence of dogs with phenotypes similar to those in modern breeds 4000 years ago. However, recent genetic analyses have suggested that modern dog breeds have a much more recent origin, probably <200 years ago. To study the origin of contemporaneous breeds we combined the analysis of paternally inherited Y chromosome markers with maternally inherited mitochondrial DNA and biparentally inherited autosomal microsatellite markers in both domestic dogs and their wild ancestor, the gray wolf. Our results show a sex bias in the origin of breeds, with fewer males than females contributing genetically, which clearly differs from the breeding patterns in wild gray wolf populations where both sexes have similar contributions. Furthermore, a comparison of mitochondrial DNA and Y chromosome diversity in dog groups recognized by the World Canine Organization, as well as in groups defined by the breeds' genetic composition, shows that paternal lineages are more differentiated among groups than maternal lineages. This demonstrates a lower exchange of males than of females between breeds belonging to different groups, which illustrates how breed founders may have been chosen. Text Canis lupus gray wolf PubMed Central (PMC) Genetics 172 2 1121 1128 |
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Investigations Sundqvist, A.-K. Björnerfeldt, S. Leonard, J. A. Hailer, F. Hedhammar, Å. Ellegren, H. Vilà, C. Unequal Contribution of Sexes in the Origin of Dog Breeds |
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Investigations |
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Dogs (Canis familiaris) were domesticated from the gray wolf (Canis lupus) at least 14,000 years ago, and there is evidence of dogs with phenotypes similar to those in modern breeds 4000 years ago. However, recent genetic analyses have suggested that modern dog breeds have a much more recent origin, probably <200 years ago. To study the origin of contemporaneous breeds we combined the analysis of paternally inherited Y chromosome markers with maternally inherited mitochondrial DNA and biparentally inherited autosomal microsatellite markers in both domestic dogs and their wild ancestor, the gray wolf. Our results show a sex bias in the origin of breeds, with fewer males than females contributing genetically, which clearly differs from the breeding patterns in wild gray wolf populations where both sexes have similar contributions. Furthermore, a comparison of mitochondrial DNA and Y chromosome diversity in dog groups recognized by the World Canine Organization, as well as in groups defined by the breeds' genetic composition, shows that paternal lineages are more differentiated among groups than maternal lineages. This demonstrates a lower exchange of males than of females between breeds belonging to different groups, which illustrates how breed founders may have been chosen. |
format |
Text |
author |
Sundqvist, A.-K. Björnerfeldt, S. Leonard, J. A. Hailer, F. Hedhammar, Å. Ellegren, H. Vilà, C. |
author_facet |
Sundqvist, A.-K. Björnerfeldt, S. Leonard, J. A. Hailer, F. Hedhammar, Å. Ellegren, H. Vilà, C. |
author_sort |
Sundqvist, A.-K. |
title |
Unequal Contribution of Sexes in the Origin of Dog Breeds |
title_short |
Unequal Contribution of Sexes in the Origin of Dog Breeds |
title_full |
Unequal Contribution of Sexes in the Origin of Dog Breeds |
title_fullStr |
Unequal Contribution of Sexes in the Origin of Dog Breeds |
title_full_unstemmed |
Unequal Contribution of Sexes in the Origin of Dog Breeds |
title_sort |
unequal contribution of sexes in the origin of dog breeds |
publisher |
Copyright © 2006 by the Genetics Society of America |
publishDate |
2006 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1456210 http://www.ncbi.nlm.nih.gov/pubmed/16219789 https://doi.org/10.1534/genetics.105.042358 |
genre |
Canis lupus gray wolf |
genre_facet |
Canis lupus gray wolf |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1456210 http://www.ncbi.nlm.nih.gov/pubmed/16219789 http://dx.doi.org/10.1534/genetics.105.042358 |
op_rights |
Copyright © 2006 by the Genetics Society of America |
op_doi |
https://doi.org/10.1534/genetics.105.042358 |
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Genetics |
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172 |
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2 |
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1121 |
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1128 |
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1766385429888630784 |