نتایج جستجو برای: heteromorphic taxon

تعداد نتایج: 11345  

2016
Jonathan Mitchell

In phylogenetics, the evolutionary history of a group of taxa, for example, groups of species, genera or subspecies, can be modelled using a phylogenetic tree. Alternatively, we can model evolutionary history with a phylogenetic network. On phylogenetic networks, edges that have previously evolved independently from a common ancestor may subsequently converge for a period of time. Examples of p...

Journal: :Molecular biology and evolution 2005
Antonis Rokas Sean B Carroll

The relative contribution of taxon number and gene number to accuracy in phylogenetic inference is a major issue in phylogenetics and of central importance to the choice of experimental strategies for the successful reconstruction of a broad sketch of the tree of life. Maximization of the number of taxa sampled is the strategy favored by most phylogeneticists, although its necessity remains the...

Journal: :Briefings in bioinformatics 2012
Ahmed Ragab Nabhan Indra Neil Sarkar

Over the past two decades, there has been a long-standing debate about the impact of taxon sampling on phylogenetic inference. Studies have been based on both real and simulated data sets, within actual and theoretical contexts, and using different inference methods, to study the impact of taxon sampling. In some cases, conflicting conclusions have been drawn for the same data set. The main que...

2013
Ekaterina Gornung Fabio Mosconi Flavia Annesi Riccardo Castiglia

The karyotype of a sphaerodactylid gecko Euleptes europaea (Gené, 1839) was assembled for the first time in this species. It is made of 2n = 42 gradually decreasing in size chromosomes, the highest chromosome number so far acknowledged in the family Sphaerodactylidae. The second chromosome pair of the karyotype appears slightly heteromorphic in the male individual. Accordingly, FISH with a telo...

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