question archive Mutations are VERY RARE and occur at random
Mutations are VERY RARE and occur at random
Subject:BiologyPrice: Bought3
Mutations are VERY RARE and occur at random. A wild-type E. coli that also carries a wild-type F'lac plasmid (i.e. merodiploid for lac) is mutagenized. You identify mutants that express beta-gal on no-glucose medium regardless of the presence of lactose. You conclude that the following genetic elements could be mutated:
Note. For this answer, let's use the book definition of P (binds RNA pol) and O (binds lacI product) sites, not the encompassing definition (original O = current P + O) originally used by Jacob and Monod.
a) I
b) P
c) Z
d) O
e) either A or Y
