The biological research, of Gottfried Schatz at the University of Basel and Gunter Blobel at Rockefeller University, which explains a mechanism by which mitochondrial proteins are transported across membranes is described. Results indicate that the construction and heredity of mitochondria have surprising differences from other cell processes. (BT)

The hazards posed by new techniques of genetic manipulation have prompted scientists to regulate and in some cases restrict their own basic investigations. Describes some possible applications of the new techniques and outlines the established research guidelines. (GS)

This article discusses the science and politics of IQ. It discusses the research that has been completed on both the environmental and heredital aspects of intelligence and the effect the answers to this question can have on educational policy. (BB)

Relates occurrences at the Asilomar conference that led to the drafting of guidelines for gene-transplant research. The guidelines allow some experiments, defer others until safer containment is available, and ban those considered highly dangerous. (GS)