Population Genetical, Behavioural and Evolutionary Studies in the Drosophila bipectinata Species Complex

Comparison of population dynamics with regard to chromosomal arrangements, protein and nucleotide polymorphism among closely related species can provide invaluable glimpses into the intricacies of speciation. In addition, recently diverged closely related species may also exhibit behavioural differences especially sexual behaviour which can be compared across the species and eventually may aid in understanding the process of speciation. To get the finer details of the so called ‘speciation genes’, evolutionary studies pertaining to hybrid incompatibilities are required. This involves detailed mapping of the speciation genes through introgression of a candidate gene from one species into the genetic background of another species. Evolutionary studies also include studies on the degree and pattern of sexual isolation among closely related species.