Parental Handling in Two Strains of Mice Reared by Foster Parents

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Science  13 Jul 1962:
Vol. 137, Issue 3524, pp. 129-130
DOI: 10.1126/science.137.3524.129


The amount of handling received in ten daily tests by infant mice reared by foster parents was significantly affected by the strain of pups and by the strain of foster parents. This finding siggests that at least some behavioral differences between highly inbred strains may be due to early environmental rather than genetic variation.