Embryonic recapitulation, coenogenesis and heterochrony. An attempt at a comparative analysis of the relationships between embryogenesis and evolution
Delsol, M.; Flatin, J.
Rivista di Biologia 85(3-4): 369-384
1992
ISSN/ISBN: 0035-6050 PMID: 1341833 Document Number: 403774
The relationships between embryogenesis and the scale of living beings have been the subject of long-dated observations. It is well known that Haeckel, going back and codifying this data, has divided it into two large groups called palingenesis and coenogenesis. He has only mentioned the concept of heterochrony to which we give much more importance nowadays. We will look over these questions and link them up with some aspects of modern genetics.