There's an axiom evolutionary biologists used to like: "ontogeny recapitulates phylogeny," or the development of the embryonic individual repeats that of its species' evolution.
Mechanisms involved in development of the embryonic limb have remained the same throughout eons of genetic and environmental evolution under Earth gravity (lg).
The signalling pathways of these growth regulators (also known as phytohormones) are relatively well understood, but their evolution, as well as their relationship to the evolution of embryonic and post-embryonic development in the plant kingdom, is less clear [ 1].
Research Description: Evolution of Germ Cell Specification and Reproductive Systems Our lab is interested in the evolution of early embryonic development, with a focus on the germline and the evolution of the mechanisms that specify these cells during embryonic development.
The origination and evolution of embryonic development; The role of modifications of developmental processes in the production of novel features; How the adaptive plasticity of development facilitates the origin and maintenance of complex life cycles with embryos, larvae, and adults; and.
The relative importance of these natural selective forces in the evolution of avian embryonic developmental period (EDP) remain poorly resolved, perhaps in part because research has tended to focus on a single, high taxonomic-level group of birds: Order Passeriformes.
We used the phase-field technique to capture the temporal and spatial evolution of embryonic formation of the monoclinic phase in tetragonal single crystals.
Having studied the evolution of 2,092 embryonic genes, we may conclude that early zygotic genes, but not maternal and late zygotic genes, are subject to the strongest evolutionary constraints during embryogenesis in D. melanogaster and D. simulans (fig. 1).
The consistent patterns observed for data in Tables 1 and 2 and Additional files 3 and 4 unambiguously indicate that a higher tendency of being targeted by relaxed purifying selection or positive selection was associated with the more rapid evolution of mouse embryonic heart enhancers.
