The Y chromosome effect on intermale aggression in mice depends on the maternal environment.

• DOI: 10.1093/genetics/129.1.231
• Publication Date: 2021-01-13T17:48:16Z
• Authors: M Carlier; P L Roubertoux; C Pastoret
• Keywords: Maternal effect; Reciprocal

Abstract Two parental strains of laboratory mice, NZB and CBA/H, were chosen for their differences in attack behavior. have higher scores than CBA/H. An effect the Y chromosome on behavior was determined two maternal environments. Each male tested once a dyadic encounter with an A/J as standard opponent. The reciprocal F1s four backcrosses used. In each group, proportion attacking males used dependent variable. first experiment, ovarian graft method to test variation overall environment: vs. F1. results demonstrated interaction between environment. By use adoption method, it shown second experiment that this probably postnatal (and not prenatal).