Two Strains of E

Multiple Choice

Two strains of E. coli-one of which can turn on its lactase production and one that cannot-are grown together with lactose in the medium. If all other conditions are equal, what will occur?

A) Both strains will continue to be present in equal amounts.
B) The two strains will kill each other off.
C) The strain that can turn on lactase production will outcompete the other strain.
D) The strain that cannot turn on lactase production will outcompete the other strain.
E) The two strains will work cooperatively and share the lactose.