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Genetics. Jan 1994; 136(1): 225–230.
PMCID: PMC1205774

Co-Segregation of Intermale Aggression with the Pseudoautosomal Region of the Y Chromosome in Mice


The sexual dimorphism of aggression has led to a search for its Y chromosomal correlates. We have previously confirmed that initiation of attack behavior against a conspecific male is Y-dependent in two strains of laboratory mice (NZB and CBA/H). We provide evidence that the non-pseudoautosomal region of the Y is not involved and that only the pseudoautosomal region of the Y is correlated with initiation of attack behavior. The autosomal correlates also contribute to this behavior in an additive or interactive manner with the pseudoautosomal correlates.

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Selected References

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