47,XXY MALES - SEX-CHROMOSOMES AND TOOTH SIZE

  • 1 January 1980
    • journal article
    • research article
    • Vol. 32  (6) , 955-959
Abstract
Permanent tooth crowns of 47,XXY males were generally larger than those of control males and females and their 1st-degree male and female relatives. Apparently tooth-size increase in 47,XXY males is due to a direct genetic effect. The concept of the presence of a specific growth gene (or genes) in the human X and Y chromosomes is supported. The effect of this gene (or genes) seems to be the promotion of tooth growth and the Y chromosome is more effective than the X chromosome in this respect.