Current thinking on how the Toxoplasma gondii parasite invades its host is incorrect, according to a study published today in Nature Methods describing a new technique to knock out genes. The findings could have implications ...
Definition. Coral bleaching is a process whereby the coral colonies lose their colour, either due to the loss of pigments by microscopic algae (zooxanthellae) living in symbiosis with their host organisms (polyps), or because these zooxanthellae have been expelled.
Coral is a colony of tiny animals that have porous limestone skeletons which can be used for bone repair in humans. Coral reefs are home to about 10% of all the fish that people eat. Coral reefs cover about one-fiftieth of the ocean floor, but about one-quarter of all marine species make reefs their home.