Species: Difference between revisions
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A collection of [[Organism|organisms]] that have alike physiological properties and that are capable of interbreeding and passing on their [[Genes|genes]] to the next generation | A collection of [[Organism|organisms]] that have alike physiological properties and that are capable of interbreeding and passing on their [[Genes|genes]] to the next generation [[Catherine Soanes, Angus Stevenson (2008). Concise Oxford English Dictionary . 11th ed. Oxford University press Inc : Oxford Univeristy . 1385.|[1]]]. | ||
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< | == Species Concepts and Their Definitions == | ||
There are numerous concepts that can be used to define a species: | |||
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'''i. Biological species concept''' | |||
A biological species is a group of organisms that are capable of interbreeding and producing fertile offspring, and are isolated from other such groups to avoid reproduction [https://books.google.com.my/books?hl=en&lr=&id=L_rwZ1yEQM8C&oi=fnd&pg=PA17&dq=ernst+mayr+biological+species+concept&ots=gDpySuz33x&sig=L2Ab9bvFh3AiEyscxRIkirg5BeA&redir_esc=y#v=onepage&q=ernst%20mayr%20biological%20species%20concept&f=false [2]]. | |||
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'''ii. Ecological species concept''' | |||
An ecological species is a group of organisms that share the same [https://en.wikipedia.org/wiki/Ecological_niche ecological niche]. | |||
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'''iii. Morphological species concept''' | |||
A morphological species is a group of organisms that share a unique set of structural features. | |||
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'''iv. Phylogenetic species concept''' | |||
A phylogenetic species is a group of organisms that are bound by a unique ancestry and share one or more derived characters, which is also known as [https://en.wikipedia.org/wiki/Synapomorphy synapomorphy]. <br> | |||
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== References == | |||
Catherine Soanes, Angus Stevenson (2008). Concise Oxford English Dictionary . 11th ed. Oxford University press Inc : Oxford Univeristy . 1385.<br> | |||
Brooker, R. J. (2005). Genetics: Analysis &amp;amp; Principles (Second Edition). McGraw-Hill.<br> | |||
Mayr, E. (2000). The Biological Species Concept. Q. Wheeler; R. Meier, Species Concepts and Phylogenetic Theory: A Debate (p. 17). New York: Columbia University Press.<br> | |||
Revision as of 03:39, 4 December 2016
A collection of organisms that have alike physiological properties and that are capable of interbreeding and passing on their genes to the next generation [1].
Species Concepts and Their Definitions
There are numerous concepts that can be used to define a species:
i. Biological species concept
A biological species is a group of organisms that are capable of interbreeding and producing fertile offspring, and are isolated from other such groups to avoid reproduction [2].
ii. Ecological species concept
An ecological species is a group of organisms that share the same ecological niche.
iii. Morphological species concept
A morphological species is a group of organisms that share a unique set of structural features.
iv. Phylogenetic species concept
A phylogenetic species is a group of organisms that are bound by a unique ancestry and share one or more derived characters, which is also known as synapomorphy.
References
Catherine Soanes, Angus Stevenson (2008). Concise Oxford English Dictionary . 11th ed. Oxford University press Inc : Oxford Univeristy . 1385.
Brooker, R. J. (2005). Genetics: Analysis &amp; Principles (Second Edition). McGraw-Hill.
Mayr, E. (2000). The Biological Species Concept. Q. Wheeler; R. Meier, Species Concepts and Phylogenetic Theory: A Debate (p. 17). New York: Columbia University Press.