Multiple Choice
Consider the following experiment. First, large populations of two mutant strains of Escherichia coli are mixed, each requiring a different, single amino acid. After plating them onto a minimal medium, 45 colonies grew. Which of the following may explain this result?
A) The colonies may be due to back mutation (reversion) .
B) The colonies may be due to recombination.
C) Either A or B is possible.
D) Neither A nor B is possible.
Correct Answer:

Verified
Correct Answer:
Verified
Q17: Compare and contrast generalized transduction with specialized
Q18: Transposons can be found on many genetic
Q19: The killing of cells by UV irradiation
Q20: Mutation rates are similar in Bacteria and
Q21: Hfr strains of Escherichia coli<br>A) do not
Q23: Homologous recombination has been observed in<br>A) Archaea.<br>B)
Q24: Consider a mutation in which the change
Q25: When the F factor is integrated, all
Q26: In specialized transduction, virtually any genetic marker
Q27: A deleterious mutation in recA results in<br>A)