Q
The first sign of future deciduous teeth as a thickening of oral ectoderm appears at about_____________?
-
A
A. 25th day of intra uterine life
-
B
B. 34th day of intra uterine life
-
C
C. 56th day of intra uterine life
-
D
D. 20 wks of intra uterine life
Correct Answer:
C. C. 56th day of intra uterine life