bk1 << Amy-p << bk2 << hy
It is proposed that the inversions carried by SD chromosomes from nature act to eliminate recombination and thereby balance the distorting elements of the SD complex.
Crossing over reduced to about 1.5% between centromere and inversion and to about 0.1% between inversion and tip of chromosome.
Sturtevant, Sep. 1913.
One of 16 polymorphic inversions identified in the Drosophila Genetic Reference Panel (DGRP) freeze 2 lines.
Cosmopolitan inversion. Isolation: Yanga, Mexico.
Recovered as: Cosmopolitan inversion.
Isolation: Koleika, Greece.
Isolated as a crossover suppressor.
Naturally occurring inversions have been categorised into classes according to their geographical distribution and frequencies, In(2R)NS belongs to the common Cosmopolitan class.
Common cosmopolitan inversion.
Distribution in Indian populations studied.
Common cosmopolitan inversion. The distribution of this inversion in two populations from Valencia, Spain (one from a cellar and one from a vineyard) has been studied.
The chromosome carrying both In(2LR)SD72 and In(2R)NS is referred to as 'SD-72'. 'SD-72' was isolated from a natural population in Madison, Wisconsin in 1956.
The chromosome carrying both In(2LR)SD72 and In(2R)NS is referred to as 'SD-72'.
Common cosmopolitan inversion (based on Australasian frequencies of distribution).
Inversion includes Amy-p (FBrf0026366). Found in many natural populations (e.g., Warters, 1944, Texas Univ. Publ. 4445: 129-74; Oshima and Watanabe, 1965, D. I. S. 40: 88; Ashburner and Lemeunier, 1976, Proc. R. Soc. London, B 193: 137-57; Stalker, 1976, Genetics 82: 523-47; Choi, 1977, D. I. S. 52: 88; Mettler, Voelker and Mukai, 1977, Genetics 87: 169-76; Knibb, 1982, Genetika 58: 213-21). Found in most SD chromosomes (Watanabe and Oshima, 1970, Genetics 64: 93-106).