1.
having an external rather than a genetic origin
2.
relating to embryo development by gradual change
3.
relating to the control of changes in gene function that do not involve changes in DNA sequences
4.
relating to changes in rock formations
1.
having an external rather than a genetic origin
2.
relating to embryo development by gradual change
3.
relating to the control of changes in gene function that do not involve changes in DNA sequences
4.
relating to changes in rock formations