Kepler-452b revolves around a sun much like our own.
October 31, 2000|
Blocking meiotic DNA replication in budding yeast prevents recombination initiation. This could indicate a direct coupling of the two processes, or the presence of a checkpoint system that detects incomplete replication and shuts down the formation of double-strand breaks (DSBs). In the 27 October Science, Borde et al. report that budding yeast cells defective for the replication checkpoint can progress through meiosis I in the absence of replication, but DSBs are still not formed (Science 2000,