From: Charles Plessy Date: Sun, 5 Dec 2021 06:14:15 +0000 (+0900) Subject: Encore pseudoobscura X-Git-Url: https://source.charles.plessy.org/?a=commitdiff_plain;h=d6f34fc82c8c94a53966b0acc04eb3b1fe3c96e2;p=source.git Encore pseudoobscura --- diff --git a/biblio/J1A1AAAAMAAJ.mdwn b/biblio/J1A1AAAAMAAJ.mdwn new file mode 100644 index 00000000..a4dbe07a --- /dev/null +++ b/biblio/J1A1AAAAMAAJ.mdwn @@ -0,0 +1,26 @@ +[[!meta title="Contributions to the Genetics, Taxonomy, and Ecology of Drosophila pseudoobscura and its relatives"]] +[[!tag Drosophila]] + +Theodosius Dobzhansky and Carl Epling + +Carnegie Institution of Washington publicatino 554, Washington, D. C., March 31st, 1944 + +Contributions to the Genetics, Taxonomy, and Ecology of _Drosophila pseudoobscura_ and its relatives. + +“It is certain that if any kind of structural difference had been known between +_D. pseudoobscura_ and _D. persimilis_, they would have been classed as species +from the start. Calling them races, and designating them by the letters A and B +instead of by Latin names, was an attempt to appease conservative taxonomists +who continue to adhere to the purely morphological concepts of species and +race. Such a course is neither scientifically consistent nor practically sound. +The species is the stage in the process of evolutionary divergence at which an +array of populations once actually interbreeding or capable of interbreeding +has become split into two or more reproductively isolated arrays. Species exist +in nature regardless of whether we can or cannot distinguish them by their +structural characters. There is no doubt that the great majority of animal and +plant species differ structurally, and that they can be conveniently, and in +most cases readily, recognized and delimited by their morphology alone. But it +does not follow that any and all species are recognizable by their externally +visible structures.” + + diff --git a/tags/Drosophila.mdwn b/tags/Drosophila.mdwn index 43bf95af..b4ecf0d4 100644 --- a/tags/Drosophila.mdwn +++ b/tags/Drosophila.mdwn @@ -20,9 +20,10 @@ describe them as a network of successive large-scale inversions. They also showed that the gene order of the X2 chromosome of _D. miranda_ is homologoues to the one of the hypothetical ancestor of chromosome 3 in _D. Pseudoobscura_. -"Race B" of _D. pseudoobscura_ is now called "D. persimilis". For some time -it was thought that there are no morphological differences, but it was -later found that the size of their penis differs ([[Rizki MT, 1951|biblio/14808171]]). +"Race B" of _D. pseudoobscura_ is now called "D. persimilis" ([[Dobzhansky and +Epling, 1944|biblio/J1A1AAAAMAAJ]]). For some time it was thought that there +are no morphological differences, but it was later found that the size of their +penis differs ([[Rizki MT, 1951|biblio/14808171]]). ### Other