1. To be able to describe
how the lac operon can be negatively regulated (pages 462-467) or
positively regulated (pages 468-471).
2. To know how the trp operon
is regulated, and the importance of mRNA secondary structure in its regulation.
3. To know how the
bacteriophage l
can "decide" whether to undergo lysogeny or the lytic cycle (pages 476-479).
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