The degree and pattern of sexual isolation among closely related species can be utilized for predicting the direction of evolution and deriving a phylogeny. The Drosophila bipectinata species complex is a group of four morphologically very similar species, belonging to the ananassae subgroup of the melanogaster species group. Sexual isolation among the… (More)
The influence of ovarian steroids on modulation of antinociceptive and cataleptic responses to morphine in female rats was evaluated. The sensitivity of the animals to morphine varied at different stages of the estrous cycle. The responses of postpartum and ovariectomized rats to morphine was attenuated. The test doses of estradiol-17 beta or progesterone,… (More)
[Singh B. N. and Banerjee P. 2015 Sex-specific asymmetry in eye development in interspecific hybrids in the Drosophila bipectinata species complex. There are a number of species pairs, especially in the genus Drosophila, which despite having acquired distinct species status, can still be hybridized. Such species can be very useful for studying hybrid… (More)
Pattern of mating preference of interspecific hybrid females and phylogeny in the Drosophila bipectinata species complex.
The Drosophila bipectinata species complex comprises of four very closely related species namely D. bipectinata, D. parabipectinata, D. malerkotliana and D. pseudoananassae. It was found that irrespective of the evolutionary divergence among the species, FA which is reflective of the developmental precision remains nearly same in four species. During the… (More)
The Drosophila bipectinata species complex: degree of sterility and dystrophied ovaries in interspecific hybrid females.