On the origins of morphological disparity and its diverse developmental bases

Article Abstract:

The way in which the morphological novelty concept is used to describe the aspects of morphological evolution that are not satisfactorily explained under the modern synthesis is discussed. The animal morphology and its variation can be understood from the spatial patterns produced by a set of basic developmental mechanisms and their combination.

Finland, Evolution (Biology), Evolution, Animal development, Morphological variation

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The power of regeneration and the stem-cell kingdom: Freshwater planarians (platyhelminthes)

Article Abstract:

The power of regeneration shown by freshwater planarians is capable of regenerating a complete organism from any tiny body fragment. Molecular studies have begun to reveal the role of developmental genes in regeneration, although it is premature to propose a molecular model for planarian regeneration.

Spain, Physiological aspects, Cladistic analysis, Platyhelminthes, Flatworms

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