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11. EXPERIMENTAL DEVELOPMENTAL MORPHOLOGY 



SUBDIVISION 



1 Theoretical problems 



2 Methods and technics 



3 General subjects (asexual development, etc.) 



4 Initial development 



a Primordial germ cells 



b Ovogenesis and spermatogenesis 



c Maturation 



d Ovulation and oviposition 



e Activation and fertilization 



f Parthenogenesis 



g General subjects 



5 Cleavage and mitosis 

 a Cleavage 



b Mitosis 



6 Further development of Invertebrates 



a General subjects (complete development) 

 b Topogenesis 



c Determination of primitive development 

 d Development of part of the organism (head) 

 e Development of special organ systems 

 (Cf. general subdivision p. 120 — 122) 

 f Histo- and cytogenesis 



7 Further development of Vertebrates 

 a General investigations 



1 General subjects 



2 Complete development 



3 Partial development 



4 Implantation and placentation 

 b Topogenesis 



1 Early development 



2 Gastrulation and formation of germ layers 



3 Neurulation 



4 Formation of neural crest 



5 First larval development 



c Induction, determination, etc. 



1 Induction 



2 Determination 



3 Regulation and organisation 



d Development of parts of the organism 



1 Head 



2 Limb and wing 



3 Tail 



4 Branchial region 



e Development of special organ systems 

 (Cf. general subdivision p. 120 — 122) 

 f Histo- and cytogenesis 

 8 Growth and differentiation 

 a Growth 



