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

Explain homozygosity and heterozygosity, What is the difference between hom...

What is the difference between homozygosity and heterozygosity? Homozygosity happens when an individual has two identical alleles of a gene, for instance, AA or aa. Heterozygos

Guidelines for diagnosis and treatment planning, Guidelines for diagnosis a...

Guidelines for diagnosis and treatment planning The diagnosis and planning the case is by far the most important step in the entire sequence of the treatment and due considerat

Bque, what is working of heart

what is working of heart

Define self monitoring of blood glucose, Q. Define Self Monitoring of Blood...

Q. Define Self Monitoring of Blood Glucose? Self Monitoring of Blood Glucose (SMBG): A patient can monitor the glucose level at home by self using the glucometer for checking t

Explain biological function of mitosis and meiosis, Concerning their biolog...

Concerning their biological function what is the difference between mitosis and meiosis? The major biological function of mitosis is cellular multiplication, a fundamental proc

What is the lymphatic system, What is the lymphatic system? The lymphat...

What is the lymphatic system? The lymphatic system is a network of specialized valved vessels that drain interstitial fluid (lymph). The lymphatic system is also responsible fo

What is more and less biologically complex, What is more and less biologica...

What is more and less biologically complex out of whey protien and ice cream and why?

Sketch cis-trans isomer of the first molecule, Please help with the followi...

Please help with the following: a) Draw a diagram (showing all the C and H atoms, and their bonds) for a hydrocarbon with 5 carbons with a double bond between carbons 2 and 3.

What is the relevance of knowing about gi of foods, What is the relevance o...

What is the relevance of knowing about GI of foods? Let us see how this index is helpful in prescribing therapeutic diets. You would realize that the dietary GI provides an ind

Differences between prokaryotic & eukaryotic cells, DIFFERENCES BETWEEN PRO...

DIFFERENCES BETWEEN PROKARYOTIC & EUKARYOTIC CELLS   S . N o .   CHA R AC T ERS   P R O K AR Y O T I C CELL

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