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  • Title: Quantitative genetic variation in the skeleton of the mouse: II. Description of variation within and between inbred strains.
    Author: Lovell DP, Johnson FM, Willis DB.
    Journal: Am J Anat; 1986 Jul; 176(3):287-303. PubMed ID: 3739952.
    Abstract:
    Variation in the skeletons of over 400 male and female mice from 12 genotypes was investigated by using multivariate statistical methods. A series of discriminant functions explains the differences in the shape of six bones: mandible, os coxae, femur, tibia-fibula, scapula, and humerus. The anatomical features of bone shape described by these functions are summarized together with illustrations of the typical shapes of each bone from the 12 genotypes. Variability within genotypes was investigated by using the Mahalanobis D2 distance--a measure of the difference between two points representing multivariate data--from the group mean. A series of variants were detected ranging from grossly abnormal bones to bones showing subtle differences localized to specific regions. Examples of the variants found are illustrated.
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