Phylogenetic scheme

Human somatic cells contain 46 chromosomes, cattle 60. and fruit fly 8. Thus, the diploid number bears no relationship to the species positions in the phylogenetic scheme of classification. 

Fig. 22.20 Possible phylogenetic scheme of the HCV (Hepaciviri-dae) and GB viruses (especially GBV C/HGV) as well as other members of the Flaviviridae (I) DV = Dengue virus, WNV = West Nile virus, JEV = Japanese encephalitis virus, YFV = yellow...

Evolutionary biology seeks to explain the pattern that becomes apparent when phena are arranged in a phylogenetic scheme. The worth of these explanatory narratives can be measured by the stability of the concepts of relationships upon which they are based we must accept that explanations for apparent anatomical innovations will change if phena are re-ordered in new phytogenies, or they can change because of the inclusion of new anatomies. 

In many phylogenetic schemes, the red algae are regarded as representing a level of cellular organization between that of the lower... 

Phylogenetic data from 18 sequences of the thioredoxin family were used to calculate the eloping scheme for active site positions [13]. The frequency of different amino acids at a given position determines a positional mixture with different... 

The taxonomic study of sponges is fraught with difficulties. Only recently have authoritative taxonomic schemes for Porifera received general acceptance, though many details are still debated. There is still a considerable amount to be learned about sponges and the phylogenetic relationships... 

Wu and Shivakumar (1994) developed a neural network system for classification of ribosomal RNAs according to phylogenetic classes. Two separate networks were trained, one for 220 small subunit classes, and the other for 15 large subunit classes. The input sequences were encoded using various n-gram encoding schemes, followed by a singular value decomposition compression to different number of reduced dimensions. It was... 

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