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Article

Genetic and littermate influences on yawning in two selectively bred strains of rats.

Developmental psychobiology - 1 Apr 2009

Moyaho Alejandro, Barajas Margarita, Ugarte Araceli, Eguibar José R

Abstract excerpt

This study was made to separate genetic from postnatal maternal influences on yawning in two strains of Sprague-Dawley rats selected for high- (HY) and low-yawning frequency (LY). Foster mothers of the two strains reared litters of pups in the four possible combinations and yawning was recorded in a novel environment when the adult offspring were 75-day-old. Yawning frequency of males and females was affected by...

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Identifiers

PMID: 19040204
DOI: 10.1002/dev.20359

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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