Interactions between heat-induced chiasma frequency changes in Schistocerca gregaria.
Using inbred laboratory stocks of the locust Schistocerca gregaria, two experiments were carried out using composite heat-treatment programmes of 40 degrees C and 30 degrees C combinations. These were designed to superimpose different heat-induced increases and decreases in chiasma frequency, to determine what interactions would occur and which effects might be dominant. It was found that both of the heat-induced decreases in chiasma frequency which can be obtained (Effects 2 and 3), were dominant over both of the different types of increase (Effects 1 and 4), with the largest decrease (Effect 3) being dominant over all others.
Henderson
S A
SA
Department of Genetics, University of Cambridge, U.K.
D000818:Animals; D003434:Crossing Over, Genetic; D006110:Grasshoppers / Q000235:genetics*; D006358:Hot Temperature; D008297:Male; D008540:Meiosis