Phylogenetic species concept, Biology

Assignment Help:

Q. Phylogenetic species concept ?

Taxonomists (scientists who compare, classify and name organisms) tend to describe a species by studying their physical characteristics and behaviour, and also their genetic and chemical similarities and divergences as a result of evolution. Based on this concept Cracraft proposed the Phylogenetic Species Concept (PSC) in 1983. Here he defines a species as "the smallest diagnostic cluster of individual organisms within which there is parental pattern of ancestry and decent." However, it can be argued that a population, subspecies, stage or a morph can then be elevated to species status. Consequently the number of species recognised becomes highly dependant on the analytical tools used. Even so, the PSC is considered as the most valuable tool for working taxonomists.


Related Discussions:- Phylogenetic species concept

Anatomy and Physiology, I have a test online it is timed 30 minutes on Anat...

I have a test online it is timed 30 minutes on Anatomy and Physiology I need an expert who is an expert in this subject to take it for me

Succession, why succession more likely to occur on valley floor than steep ...

why succession more likely to occur on valley floor than steep slopes

Explain agar - algal polysaccharides, Agar Agar is a polysaccharide fou...

Agar Agar is a polysaccharide found in the cell walls of some red algae and is unusual in containing sulfated galactose monomers. Certain marine algae of the class Rhodophyceae

Explain pasteurization, Explain Pasteurization The act or process of h...

Explain Pasteurization The act or process of heating a beverage or other food, to a specific temperature for a specific period of time in order to kill microorganisms that cou

Epithelial Cells, What are all teh parts of a simple ciliated columnar epit...

What are all teh parts of a simple ciliated columnar epithilial cell?

Explain in brief about unicellular “animals”, Single-cell organisms, protis...

Single-cell organisms, protists, have always been a problem for taxonomists who have trouble describing categories for organisms. Their mixed feeding habits that include being capa

Unit membrane model, Unit Membrane Model Lamellar model was supported ...

Unit Membrane Model Lamellar model was supported by Robertson. According to Robertson - All biomembrane have similar structure (like PM), on the basis of this observati

What are the major components of the cytoskeleton, Q. What are the major co...

Q. What are the major components of the cytoskeleton? The cytoskeleton is a network of very small filaments and tubules distributed throughout the cytoplasm of eukaryotic cells

Phylum coelenterata, #questioen..what is the example of outline og phylum c...

#questioen..what is the example of outline og phylum coelenterata

What is prophylaxis, What is prophylaxis? Prophylaxis are measures take...

What is prophylaxis? Prophylaxis are measures taken to stop diseases. For instance, the use of condoms in sexual relations is a prophylaxis against contamination by agents that

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