Hint) this is a fairly challenging question

Subject:BiologyPrice:2.84 Bought7

Share With

Hint) this is a fairly challenging question. Remember that a single bp change mutation can change the target site of a regulator. It can also alter a protein to change its properties.

In a well characterized Oc mutant strain, mutagenesis induces a second mutation that restores the wild-type phenotype. You determine that this second mutation does not affect the O site (doesn't change operator DNA sequence). Furthermore, you find that it acts in trans and it is dominant to its wild-type, allele. Your next candidate is:

a) lacI

b) CAP

c) all the others are candidates

d) lacP

e) lacZ