Abstract
The intermale aggression of the B1OD1F1 hybrid resembles that of the pugnacious DBA/1 strain, whereas the intermale aggression of the B1OD2F1 hybrid resembles that of the pacific C57BL/10 strain. This finding is consistent with the hypotheses that the DBA/1 (but not the DBA/2) Y chromosome has an effect on intermale aggression or that the DBA/2 autosomes mask a potential contribution of the DBA/2 Y chromosome to intermale aggression. These two hypotheses were discriminated by testing intermale aggression in DBA/1, DBA/2, and DBA/2.DBA/1-Y congenic strains. The DBA/2 and DBA/2.DBA/1-Y were statistically equivalent on all measures of intermale aggression. This finding supports the hypothesis that the DBA/1 and DBA/2 Y chromosomes have the potential for equivalent effects on intermale aggression and that the DBA/2 autosomal genes can mask the potential contribution of the DBA/1 and DBA/2 Y chromosome to intermale aggression.
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The research reported here was supported by NIMH Grant 28021 and by a grant from the University of Connecticut Research Foundation.
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Shrenker, P., Maxson, S.C. The Y chromosomes of DBA/1Bg and DBA/2Bg compared for effects on intermale aggression. Behav Genet 12, 429–434 (1982). https://doi.org/10.1007/BF01065634
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DOI: https://doi.org/10.1007/BF01065634