Parul Banerjee

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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)
If one has to understand speciation through hybridization, few models can prove to be better than Drosophila. This is not only because it can be cultured in the laboratory and crosses made conveniently but also due to the fact that speciation seems to occur very fast in Drosophila, with the genus having a large number of species. All species of Drosophila,(More)
Aberrant expression of the presynaptic serotonin 1A receptor (5-HT(1A)-R) because of a polymorphism in the 5-HT(1A)-R gene is associated with severe depression in human, whereas its absence up to postnatal day 21 (P21) in the forebrain of mice results in heightened anxiety in adulthood. These observations collectively indicate that the 5-HT(1A)-R has a(More)
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 incompatibilities which ultimately can lead to speciation genes (the genes that have diverged to the greatest extent between the species). D. bipectinata(More)
The failings of the heterogametic sex, quite customary in interspecific hybridizations, have been called Haldane’s rule. Haldane (1922) said that, in general, when one sex of hybrids between species is sterile or inviable, it is more frequently the heterogametic one. As suggested by numerous workers, the reason behind this phenomenon is attributed to the X(More)
In the rat, EDTA and isoproterenol stimulated PTH secretion, whereas high calcium and propranolol inhibited it. The stimulatory effects of EDTA and isoproterenol were still evident and unaltered in the presence of blocks induced by propranolol and high calcium, respectively. The findings suggest that: (i) both calcium and beta-adrenergic stimuli affect PTH(More)
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)
In vitro incubation studies with bovine parathyroid gland slices compared the relative responsiveness of parathyroid hormone (PTH) secretion to isoprotherenol, epinephrine or norepinephrine. Isoproterenol was the most potent and norepinephrine the least potent of the three stimuli, suggesting a beta 2 type of an adrenergic response. However in this in vitro(More)
In sepsis, excessive inflammation may lead to organ injury or a paradoxical immunosuppressed state where the host is unable to clear preexisting infection. Resolution of inflammation is the process which restores tissue homeostasis and ensures that a chronic cycle of infection/inflammation does not occur. Lipoxin A4 (LXA4) is one of a family of lipid(More)
Twenty-three newly synthesized mixed-ligand complexes of oxo-vanadium(IV) and oxo-vanadium(V) were studied for antimicrobial activity. Eight of these complexes were found to have microbicidal properties. The complexes [NH4][VO(gl)2H2O (gl-H2=glycolic acid) and [VO(ACOAP)(acac-H)]H2O (ACOAP-H2=Schiff base of acetylacetone and orthoaminophenol,(More)