Question 1
The lac operator is an example of a:
◦
cis-acting element.
◦
trans-acting element.
◦ structural gene.
◦ regulator gene.
◦ positive regulatory element.
Question 2
The role of the lac repressor functions as an example of:
◦ repression by negative control.
◦ repression by positive control.
◦ induction by negative control.
◦ induction by positive control.
◦ a dual-function protein.