Which option best identifies the exact concept boundary for Variation and evolution, Selective breeding: students must describe choosing parents with desired characteristics from a mixed population.

The correct option is Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches Selective breeding because students must describe choosing parents with desired characteristics from a mixed population.. It is the only option that keeps DNA vs genes separate and answers the approved learning objective in Selective breeding.

The correct option is Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches Selective breeding because students must describe choosing parents with desired characteristics from a mixed population.. Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches Selective breeding because students must describe choosing parents with desired characteristics from a mixed population. is correct because DNA can contain many genes; a gene has a specific coding role. The learning objective says students must describe choosing parents with desired characteristics from a mixed population, so the answer must stay inside Selective breeding. 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..