Chromosomal structure in Indian populations of Drosophila immigrans Sturtevant.

Mitotic chromosomes in different Indian geographic populations of D. immigrans were examined by modern air-dried technique. A map of salivary gland chromosomes has been constructed. Several identifiable natural landmarks in each arm of the chromosomes were recognised. Analysis of several different geographic populations has revealed one common inversion in II L. In addition, on deletion has also been detected in the X-chromosomes which is reported for the first time in this species.