Which option best identifies the exact concept boundary for The development of understanding of genetics and evolution, Evidence for evolution: students must explain that evolution by natural selection is now widely accepted.

The correct option is Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches Evidence for evolution because students must explain that evolution by natural selection is now widely accepted.. It is the only option that keeps DNA vs genes separate and answers the approved learning objective in Evidence for evolution.

The correct option is Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches Evidence for evolution because students must explain that evolution by natural selection is now widely accepted.. Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches Evidence for evolution because students must explain that evolution by natural selection is now widely accepted. is correct because DNA can contain many genes; a gene has a specific coding role. The learning objective says students must explain that evolution by natural selection is now widely accepted, so the answer must stay inside Evidence for evolution. 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..