#Id: 2985
#Unit 3. Fundamental Processes
A comprehensive series of such temperature-sensitive mutants in Escherichia coli identifies a set of loci called the dna genes. The dna mutants distinguish two stages of replication by their behavior when the temperature is raised
The members of the major class of quick-stop mutants cease replication immediately upon a temperature increase.
The members of the smaller class of slow-stop mutants complete the current round of replication, but cannot start another.