Question

select the correct answer. jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?
a. mutations to the dna sequence
b. normal gene regulation
c. operon gene induction
d. rna interference

Explanation:

To determine the cause of genetic modification in bacteria for antibiotic resistance:

• Option A: Mutations (changes in DNA sequence) can lead to antibiotic resistance by altering genes involved in antibiotic interaction.
• Option B: Normal gene regulation is routine and not linked to new resistance - causing genetic changes.
• Option C: Operon gene induction controls gene expression, not DNA sequence changes for resistance.
• Option D: RNA interference affects gene expression post - transcription, not DNA - level resistance mutations.

So, mutations to DNA sequence (A) is the cause.

Answer:

A. mutations to the DNA sequence