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Additive and non-additive genetic variance in odontometric traits in crosses of seven inbred lines of house mice

Published online by Cambridge University Press:  14 April 2009

Larry J. Leamy  and
R. W. Touchberry
Larry J. Leamy
Affiliation:
Department of Biology, California State University, Long Beach, California
R. W. Touchberry
Affiliation:
Department of Dairy Science, University of Illinois, Urbana, Illinois
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A least-squares diallel analysis of the offspring of crosses of seven inbred lines of house mice was performed for the mean widths of the second (M2) and third (M3) mandibular molars. Significant differences among lines, as well as between inbreds and hybrids (positive heterosis) were found for these characters. Estimates of the heritabilities (from general combining ability variances) were high for both teeth as were estimates of maternal effects. Specific combining ability and reciprocal effects were significant only for the M3. Additionally, X-irradiation reduced the mean number of individuals per litter, and thereby indirectly influenced the widths of both molars.

Type
Research Article
Information
Genetics Research , Volume 23 , Issue 2 , April 1974 , pp. 207 - 217
Copyright
Copyright © Cambridge University Press 1974

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