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Am J Hum Genet. 1987 Jun;40(6):512-26.

Genetic and environmental influences on human birth weight.

Abstract

Path-analytic techniques were used to demonstrate a significant influence of both fetal genes and maternal environment on birth weight in a sample of infants born to primarily white, middle-class, nonsmoking mothers. If the mother smoked before conception, however, the expression of the fetal birth-weight genes in males was significantly reduced. Multiparity was associated with an increase in genetic variance. This is the first report that genetic influences on birth weight are dependent on the environmental conditions imposed on the fetus by the mother.

PMID:
3591799
PMCID:
PMC1684159
[Indexed for MEDLINE]
Free PMC Article
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