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The Journal of Heredity 1984:75(1):55-58
© 1984 The American Genetic Association 75:55-58

research-article

Autosornal dominant congenital nuclear cataracts in strain 13/N guinea pigs

Diana F. Amsbaugh, and Sanford H. Stone

Laboratory of Microbial Immunity, National Institutes of Health Bethesda, MD 20205

Please address reprint requests to Diana Amsbaugh, Building 5, Room 224, National Institutes of Health, Bethesda, MD 20205

Abstract

Bilateral cataracts observed in the eyes of a 13/N guinea pig and one of her two offspring led to studies to determine the nature of this cataract and its possible heritability. The cataract was determined to be of the nuclear type, was congenital, and apparently transmitted by a single autosonial dominant gene. The cataractous condition of the mother had no effect on the percentage of litters containing stillborns. The cataractous condition of the offspring had no effect on their viability in utero, i.e., there was no greater incidence of stiliborns among cataractous than among non-cataractous offspring. The birthweights of the cataractous animals were lower, but not significantly, than those of their non-cataractous littermates; however, the survivability to weaning of the cataractous offspring was reduced significantly when compared to their non-cataractous siblings.


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