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Heredity, nutrition, and craniofacial differentiation in weanling rats: A multivariate analysis
Author(s) -
Oyhenart Evelia E.,
Sobrero Maria S.,
Pucciarelli Hector M.
Publication year - 1994
Publication title -
american journal of human biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.559
H-Index - 81
eISSN - 1520-6300
pISSN - 1042-0533
DOI - 10.1002/ajhb.1310060302
Subject(s) - weanling , heredity , craniofacial , biology , anthropometry , autosome , zoology , physiology , genetics , anatomy , endocrinology , medicine , x chromosome , gene
The effects of paternal heredity, congenital variation, and preweaning nutrition on craniofacial growth were studied on weanling Wistar (W), Holtzman (H), and their reciprocal crosses, W/H and H/W, male rats. Between‐group Mahalanobis D 2 distances were calculated from the measurements made on lateral and vertical X‐rays. Preweaning nutrition evoked the largest cranial differences, and paternal heredity the lowest; the effect of congenital variation was intermediate between these extremes. It is concluded that “strain” differences actually are the result of the complex interplay among congenital and lactational factors that can modify the genetic effect due to strain. © 1994 Wiley‐Liss, Inc.