Who compared developmental biology to crystallography?
The idea to compare biologic cells and crystal is mostly related to a German physiologist Theodor Schwann (1810-1882):



His work "Microscopic researches on the Conformity in Structure and Growth Between Animals and Plants, 1839 relates to this idea. 


  He believed that new cells form principally outside pre-existing
  cells, and wanted to draw an analogy to crystal formation.


another source:


  The cell is the unit of structure, physiology, and organization in
  living things. The cell retains a dual existence as a distinct entity
  and a building block in the construction of organisms. Cells form by
  free-cell formation, similar to the formation of crystals (spontaneous
  generation).


(other related scientists are Schleiden, Virchow, Muller).