What Is The Evolutionary Discourse On Mechanism Of Speciation
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speciation:
This is an array of processes leading to the origin of one or more new species. speciation may be cladogenetic ( lineage splitting ) and reticulate (speciation via hybridization) but it cannot be anagenesis alone.
Speciation event:
In phylogenetic system the origin time of two sister species is considered to be the identical regardless of the length of speciation event. Thus sister species and sister groups have same time of origin.
Species diversities in ecological communities:
Based on each concept, a species can be defined using different criteria. The Phylogenetic Species Concept (PSC) focuses on nucleotide divergence and classifies species as the smallest group of
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Sympatric speciation is not well attested due to difficulty in determining whether secondary colonization or other introduction of new genetic material has not occurred within a population. One example has been studied extensively and is held as a model of the process of sympatric evolution.
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