Biologjia Online

The difference between radically different destinies often reflects disarmingly small variations in timing or circumstance. If the motorcade takes a different route through Dallas, if Newton sits under a different tree, or if Ilsa picks another gin joint to walk into, the story is radically altered. In biology, perhaps the most profound example of the effects of small differences is the development of an adult organism from a single fertilized egg, a journey from inner cell mass to fully differentiated structure. The challenge of developmental biology lies in defining the influences and factors that contribute to this final destination.