Explain evolutionary classification, Biology

Assignment Help:

Evolutionary Classification

Evolutionary classification combines aspects of both phenetic and cladistic systematic. Evolutionary taxonomists attempt to show in their classification both the evolutionary relationships and the degrees of similarity among organisms. It is impossible, however, to represent both similarities and genealogies accurately in a single classification system because rates of evolution among groups of organisms and among different traits within groups of organisms are often highly variable. Therefore, evolutionary taxonomists must compromise between their 'two goals. This need not be confusing as long as the nature of the compromise is clearly indicated so that users of the system know how the taxonomic categories were constructed. With a simple and hypothetical example we can illustrate how different approaches lead to different classification of organisms even when they use the same data. Six characters have been measured, and each one can have either the ancestral state (0) or a derived one (1). In this example, evolutionary reversal of character states are: not found but in real life some reversals may occur. Given these character states, we can compare the four species phenetically and cladistically. The phenetic similarity  calculation is based on the number of shared characteristics that are in the derived

 


Related Discussions:- Explain evolutionary classification

Pregnancy - fungal infections, Pregnancy - Fungal Infections Amphoteric...

Pregnancy - Fungal Infections Amphotericin B is the preferred treatment for deep fungal infections during pregnancy. Fluconazole is teratogenic in animals and a same pattern of

Reproduction, Reproduction Living things do not arise spontaneously. T...

Reproduction Living things do not arise spontaneously. They arise only from pre-existing living things This is one of the fundamental tenets of biology. The ability of an orga

Explain changes in body tissue compartments - underweight, Explain the Chan...

Explain the Changes in Body Tissue Compartments - Underweight? The severity of nutritional deprivation determines the extent of changes in the body tissue compartments. The fir

Acyanotic congenital heart disease, Acyanotic Congenital Heart Disease   ...

Acyanotic Congenital Heart Disease   In this infant has no cyanosis because there is no abnormal communication between pulmonary and systemic circulation or there  is no mixing

Define about the physical fitness, Define about the Physical Fitness? P...

Define about the Physical Fitness? Physical fitness is a general term we come across quite often and use it to describe an individual if he or she is able to carry out a variet

Aeration, Aeration A well-aerated soil is one in which gases are availa...

Aeration A well-aerated soil is one in which gases are available to plant roots and other soil organisms, in sufficient quantities and in proper proportions to support their no

Explain the clinical manifestations for obesity, Explain the Clinical manif...

Explain the Clinical manifestations for Obesity? You must have observed that your overweight friends and colleagues seem to have less energy which makes them an easy prey for f

Mold, Does mold have roots? When mold is inside on wood - are there roots t...

Does mold have roots? When mold is inside on wood - are there roots that go into substrate? I am trying to find this out today if possible to evaluate a remediator''s plan. I am wo

Classify suture materials, Classify suture materials Sutures can broad...

Classify suture materials Sutures can broadly be classified into two kinds - Absorbable: will break down harmlessly in the body over time without intervention, Non-absor

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd