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2009:
Albert Frank W; Carlborg Orjan; Plyusnina Irina; Besnier Francois; Hedwig Daniela; Lautenschläger Susann; Lorenz Doreen; McIntosh Jenny; Neumann Christof; Richter Henning; Zeising Claudia; Kozhemyakina Rimma; Shchepina Olesya; Kratzsch Jürgen; Trut Lyudmila; Teupser Daniel; Thiery Joachim; Schöneberg Torsten; Andersson Leif; Pääbo Svante
Genetic architecture of tameness in a rat model of animal domestication.
Genetics 2009;
182(
2):.
A common feature of domestic animals is tameness-i.e., they tolerate and are unafraid of human presence and handling. To gain insight into the genetic basis of tameness and aggression, we studied an intercross between two lines of rats (Rattus norvegicus) selected over >60 generations for increased tameness and increased aggression against humans, respectively. We measured 45 traits, including tameness and aggression, anxiety-related traits, organ weights, and levels of serum components in >700 rats from an intercross population. Using 201 genetic markers, we identified two significant quantitative trait loci (QTL) for tameness. These loci overlap with QTL for adrenal gland weight and for anxiety-related traits and are part of a five-locus epistatic network influencing tameness. An additional QTL influences the occurrence of white coat spots, but shows no significant effect on tameness. The loci described here are important starting points for finding the genes that cause tameness in these rats and potentially in domestic animals in general.
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