Crossing over reduced in heterozygote to about 5% between centromere and sr and 0.3% between sr and ca.
Naturally occurring inversions have been categorised into classes according to their geographical distribution and frequencies, In(3R)Mo belongs to the rare Cosmopolitan class.
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.
Common cosmopolitan inversion.
Found in 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; Choi, 1977, D. I. S. 52: 88; 1977, Genetica 47: 155-60).