Which option correctly contrasts the named ideas for Variation and evolution, Variation: students must explain that variation may be caused by a combination of genes and environment.

The correct option is Correct contrast: DNA can contain many genes; a gene has a specific coding role. This matches Variation because students must explain that variation may be caused by a combination of genes and environment.. It is the only option that keeps DNA vs genes separate and answers the approved learning objective in Variation.

The correct option is Correct contrast: DNA can contain many genes; a gene has a specific coding role. This matches Variation because students must explain that variation may be caused by a combination of genes and environment.. Correct contrast: DNA can contain many genes; a gene has a specific coding role. This matches Variation because students must explain that variation may be caused by a combination of genes and environment. is correct because DNA can contain many genes; a gene has a specific coding role. The learning objective says students must explain that variation may be caused by a combination of genes and environment, so the answer must stay inside Variation. 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..