By Barry S. C. Leadbeater, John C. Green
The purpose of this e-book is to offer a multidisciplinary view of the flagellates exploring either their solidarity, when it comes to their constitution, mechanisms and methods, and their variety by way of biogeography, area of interest colonisation, and diversifications to their surroundings. additionally, evolutionary relationships among flagellates might be explored.
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Extra resources for Flagellates: Unity, Diversity and Evolution (Systematics Association Special Volumes)
We note that the frequent flagellar correlate of phagotrophy is not obviously compatible with the occurrence of a cell wall covering the whole cell with the exception of the flagellar axes, although Raven (1993) points out that multiple entry symbionts into walled higher plant cells occurs many times in the ontogeny of individual plants with intracellular N2-fixing symbionts. Raven (1982) has computed the minimum and mechanistic energy costs of operation of the contractile vacuole mechanism of water expulsion in freshwater flagellates.
Alignment of molecules prior to comparisons has a subjective component, homology cannot unambiguously be differentiated from analogy, and algorithms which seek to identify the best tree are unable to evaluate every option (Patterson, 1994). Nonetheless, there has been broad agreement between morphological and molecular approaches. The first molecular markers used in the study of protistan phylogeny were amino acid sequences of proteins such as cytochrome c, ferredoxins and superoxiode dismutases (Schlegel, 1991).
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