Much research has been published showing that if the prescribed doses of an antibiotic are NOT taken to completion, a strain of bacteria resistant to that specific antibiotic is likely to develop. Why does this research support the commonly accepted theory that organisms all share a common line of descent?

A. Drug-resistant strains all have the exact genetic sequence.

B. Exposure to environmental factors will produce beneficial mutations.

C. Only the resistant organisms will reproduce.

D. The surviving bacteria have adapted to the presence of the antibiotic.

Question

Much research has been published showing that if the prescribed doses of an antibiotic are NOT taken to completion, a strain of bacteria resistant to that specific antibiotic is likely to develop. Why does this research support the commonly accepted theory that organisms all share a common line of descent?

A. Drug-resistant strains all have the exact genetic sequence.

B. Exposure to environmental factors will produce beneficial mutations.

 C. Only the resistant organisms will reproduce.

D. The surviving bacteria have adapted to the presence of the antibiotic.

anonymous · Answer

d. The surviving bacteria have adapted to the presence of the antibiotic.