New developments in ontogeny and phylogeny

Phylogeny & Ontogeny

The hagfish, an Agnathan cyclostomes is the most primitive of true vertebrates as evidenced by its formed, circulating RBC and haemaocytopoietic tissue in the submucosa of the gut tract.(1) Interested in the phylogeny of the IR the authors were prompted to ship from the Scripps Institute of Oceanography and the kindness of Dr. David Jensen, about 120 California hagfish to explore this question....

Protolanguage in ontogeny and phylogeny

We approach the issue of holophrasis versus compositionality in the emergence of protolanguage by analyzing the earliest combinatorial constructions in child, bonobo, and chimpanzee: messages consisting of one symbol combined with one gesture. Based on evidence from apes learning an interspecies visual communication system and children acquiring a first language, we conclude that the potential ...

purinoceptors: Ontogeny and Phylogeny

The majority of studies of the functional distribution of purinoceptors have been carried out with mammalian preparations. The objective of this article is to review the disparate literature describing purinoceptor-mediated effects in invertebrates and lower vertebrates and, in view of the concept that ontogeny repeats phylogeny, to review also the evidence for purinoceptor involvement in the c...

Phylogeny and Ontogeny of Erythropoiesis

1Department of Life Science, Graduate School of Engineering and Resource Science, Akita University, Akita 010-8502, Japan 2Research Center for Engineering Science, Graduate School of Engineering and Resource Science, Akita University, Akita 010-8502, Japan 3Laboratory of Genetics, Butantan Institute, 05503-900 São Paulo, SP, Brazil 4Program of Postgraduate Interunits in Biotechnology USP-IBU-IP...

Allometry and size in ontogeny and phylogeny.