Crossing over reduced in heterozygous females to 1% between p and sr, none between sr and ro and 0.5% between ro and ca.
Payne, July 1917.
One of 16 polymorphic inversions identified in the Drosophila Genetic Reference Panel (DGRP) freeze 2 lines.
Reported for an Indian population.
Cosmopolitan inversion. Isolation: Aleman, Mexico. Isolation: Cordaba, Mexico.
Recovered as: Cosmopolitan inversion.
Isolation: Koleika, Greece.
Naturally occurring inversions have been categorised into classes according to their geographical distribution and frequencies, In(3R)P belongs to the common Cosmopolitan class.
In(3R)P increases the rate of recombination at the base of the X chromosome, but does not affect the rate of recombination at the tip of the X chromosome.
Common cosmopolitan inversion.
In(3R)P inversion polymorphism is maintained by strong balancing selection involving a heterozygous advantage.
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 (based on Australasian frequencies of distribution).
Widespread in laboratory stocks and is part of the balancers, LVM and C(3)x. Also found in many wild 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: 323-47; Choi, 1977, D. I. S. 52: 88; 1977, Genetica 47: 155-60; Knibb, 1982, Genetica 58: 213-21).