Several interacting molecular and biochemical processes are vital to establishing cell polarity. In a recent study, researchers at the Indian Institute of Science, Bengaluru, studied some of these signals in the centrosome—an organelle in the cell responsible for cellular organisation—of a single-cell embryo.
The strictly carnivorous Pallid and Montagu's Harriers are confirmed to be crucial secondary seed dispersers in India, rescuing viable seeds from the digestive tracts of their prey and playing an important role in maintaining the biodiversity of threatened grassland ecosystems.