Which option best identifies the exact concept boundary for Variation and evolution, Genetic engineering: students must explain that GM crops may be resistant to insect attack or herbicides and may have increased yields.

The correct option is Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches Genetic engineering because students must explain that GM crops may be resistant to insect attack or herbicides and may have increased yields.. It is the only option that keeps DNA vs genes separate and answers the approved learning objective in Genetic engineering.

The correct option is Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches Genetic engineering because students must explain that GM crops may be resistant to insect attack or herbicides and may have increased yields.. Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches Genetic engineering because students must explain that GM crops may be resistant to insect attack or herbicides and may have increased yields. is correct because DNA can contain many genes; a gene has a specific coding role. The learning objective says students must explain that GM crops may be resistant to insect attack or herbicides and may have increased yields, so the answer must stay inside Genetic engineering. 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..