Which option best identifies the exact concept boundary for The development of understanding of genetics and evolution, Resistant bacteria: students must explain that developing new antibiotics is costly and slow and may not keep up with resistant strains.

The correct option is Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches Resistant bacteria because students must explain that developing new antibiotics is costly and slow and may not keep up with resistant strains.. It is the only option that keeps DNA vs genes separate and answers the approved learning objective in Resistant bacteria.

The correct option is Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches Resistant bacteria because students must explain that developing new antibiotics is costly and slow and may not keep up with resistant strains.. Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches Resistant bacteria because students must explain that developing new antibiotics is costly and slow and may not keep up with resistant strains. is correct because DNA can contain many genes; a gene has a specific coding role. The learning objective says students must explain that developing new antibiotics is costly and slow and may not keep up with resistant strains, so the answer must stay inside Resistant bacteria. The alternative options are wrong because they either calling a gene a whole chromosome., explaining protein coding without naming the gene as the relevant section of dna., or drift away from when asking about genes, test a section of dna, protein coding, alleles, or inherited characteristics..