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Expression of the radius incompletus quantitative character temperature effects and localization of the mobile elements in drosophila 1. the properties of subpopulations studies


, : Expression of the radius incompletus quantitative character temperature effects and localization of the mobile elements in drosophila 1. the properties of subpopulations studies. Genetika 23(1): 71-80

From the control sub-population, rilc, with interrupted radial vein (L2) of the fly wing, two sub-populations were developed by selection: 1) ris-, with distal and proximal fragments of L2 almost totally eliminated, as a result of minus-selection; 2) ris+, with totally restored radial vein, resulting from plus-selection. Two sub-populations, ric113 and ric149, were also developed from the same original ric by changing gradually the cultivation temperature (29.degree. .fwdarw. 18.degree. C) at the age of 113 .+-. 5 h and 149 .+-. 5 h, respectively. The former contained 2 times less and the latter 1.5 times more L2 than ric. These phenotypes were stably inherited in over 140 generations, expressing the "epigenic" properties. The genetic system of expression of ri oligogene was shown by genetic analysis to be corresponding to the polygene model of Mather. The main properties of 5 sub-populations used further for hybridization with mobile genetic elements, are described. Possible genetic mechanisms of the temperature effects are discussed.

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