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1 Department of Orthodontics, College of Dentistry, University of Kentucky, Lexington, Kentucky 40506, USA
The study of the Carabelli trait among 199 monozygotic and dizygotic twin pairs failed to demonstrate a high degree of heritability. Analyses of antimere differences in individuals indicated a lack of mirroring and no sexual dimorphism. Monozygotic twin pairs exhibited a higher concordance rate for corresponding tooth comparisons than dizygotic twin pairs.
Submitted on November 26, 1971
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