File:Drosophila speciation experiment.svg

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Drosophila_speciation_experiment.svg‎ (SVG file, nominally 600 × 235 pixels, file size: 197 KB)

[edit] Summary

An experiment demonstrating allopatric speciation in the fruit fly (Drosophila pseudoobscura) conducted by Diane Dodd. A single population of flies was divided into two, with one of the populations fed with starch-based food and the other with maltose-based food. After the populations had diverged over many generations, the groups were again mixed; it was observed that the flies continued to prefer mating with others from the same original population.

Edited in Inkscape by User:Fastfission based on versions by User:BenB4 (Image:Speciation experiment.svg) from Ilmari Karonen's Image:Drosophila speciation.svg, based on http://evolution.berkeley.edu/evolibrary/images/evo/drosophila_experiment.gif from http://evolution.berkeley.edu/evolibrary/article/0_0_0/evo_45

Note: "eight or more generations pass" is not found in the original image but is cited in speciation from Dodd, D.M.B. (1989) "Reproductive isolation as a consequence of adaptive divergence in Drosophila pseudoobscura." Evolution 43:1308–1311.

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File history

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	04:27, 6 January 2009		600×235 (197 KB)	Ilmari Karonen (talk \| contribs)	(Reverted to version as of 03:07, 23 March 2008; "separate species, no interbreeding" is indeed wrong, see the original study )
	00:02, 6 January 2009		600×235 (197 KB)	HowDoIUseUnifiedLogin? (talk \| contribs)	(rv to 19 Sep 2006 per http://commons.wikimedia.org/w/index.php?title=Commons:Graphic_Lab_School/Images_to_improve&oldid=17442932#Please_change_text_back_to_original_version)
	03:07, 23 March 2008		600×235 (197 KB)	Chkno (talk \| contribs)	(== Summary == An experiment demonstrating allopatric speciation in the fruit fly (''Drosophila pseudoobscura'') conducted by Diane Dodd. A single population of flies was divided into two, with one )
	18:40, 19 September 2006		600×235 (197 KB)	Fastfission (talk \| contribs)	(inbreeding -> interbreeding)
	17:56, 20 August 2006		600×235 (197 KB)	Fastfission (talk \| contribs)	(try again)
	17:54, 20 August 2006		600×235 (217 KB)	Fastfission (talk \| contribs)	(== Summary == An experiment demonstrating allopatric speciation in the fruit fly (''Drosophila pseudoobscura'') conducted by Diane Dodd. A single population of flies was divided into two, with one )