For the first time, scientists can view RNA molecules directly inside cells and tissue in minute detail and across the entire ...

Nucleic acid hybridization techniques offer a new approach to answer old, intractable questions in microbial ecology as well as new questions. These include characterization of the predominant, yet ...

No less than 500 new species of cichlids, brightly coloured perch-like fish, evolved in Lake Victoria (East Africa) over the past 15,000 years -- a record in the animal and plant world. This ...

This is a preview. Log in through your library . Abstract Experiments have been made intercrossing the nine species of Theobroma which occur in Amazonia. Most cross pollination gives no normally ...