phenetic वाक्य

In addition, many of the techniques developed by phenetic taxonomists have been adopted and extended by community ecologists, due to a similar need to deal with large amounts of data.
A commonly cited reason is that distances are inherently phenetic rather than phylogenetic, in that they do not distinguish between ancestral similarity ( symplesiomorphy ) and derived similarity ( synapomorphy ).
A phenetic analysis of the genus undertaken by Nelson in 1975 yielded results in which " A . cuneatus " was grouped with " A . stictus ".
According to this concept, populations form the discrete phenetic clusters that we recognize as species because the ecological and evolutionary processes controlling how resources are divided up tend to produce those clusters.
A phenetic analysis of the genus undertaken by Ernest Charles Nelson in 1975 yielded results in which the members of " A . " sect . " Eurylaema " occurred together.

DNA DNA hybridization is among a class of comparative techniques in molecular biology that produce distance data ( versus character data ) and that can be analyzed to produce phylogenetic reconstructions only using phenetic tree-building algorithms.
Eventually, it became common to arrange supposed species and subspecies to " species groups " ( not superspecies, but an informal phenetic arrangement ) as pioneered by E . tyndarus " and similar species ).
However, certain phenetic methods, such as neighbor-joining, have found their way into phylogenetics, as a reasonable approximation of phylogeny when more advanced methods ( such as Bayesian inference ) are too computationally expensive.
In a phenetic analysis, the large degree of overall similarity found among the Corvida will make them appear to be monophyletic too, but their shared traits were present in the ancestors of " all " songbirds already.
Leonard Compagno, in his 1988 phenetic study, also grouped those species together, along with the smoothtooth blacktip shark ( " C . leiodon " ) and the finetooth shark ( " C . isodon " ).