Tooth crown size in 46, X, i (Xq) human females.
Permanent tooth crown sizes of six Finnish females with a 46, X, i(Xq) chromosome constitution (isochromosome for the long arm of the X chromosome) were measured from dental casts and compared with those of normal women, first-degree female relatives and 45, X females. Crown diameters of the 46, X, i(Xq) females were not only smaller than in the normal women but even smaller than the 45, X females. These findings can be considered indirect evidence that X chromosome gene(s) for tooth crown growth are most probably located on the short arm.
Mayhall
J T
JT
Faculty of Dentistry, University of Toronto, Canada.
Alvesalo
L
L
Townsend
G C
GC
D002869:Chromosome Aberrations / Q000235:genetics; D005260:Female; D006801:Humans; D009805:Odontogenesis / Q000235:genetics; D009811:Odontometry; D012729:Sex Chromosome Aberrations / Q000235:genetics; D014070:Tooth / Q000033:anatomy & histology*; D014960:X Chromosome