Which option gives the correct cause-and-effect relationship for Variation and evolution, Genetic engineering: students must explain that genetic engineering can give an organism a desired characteristic.

The correct option is Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. This matches Genetic engineering because students must explain that genetic engineering can give an organism a desired characteristic.. It is the only option that keeps DNA vs genes separate and answers the approved learning objective in Genetic engineering.

The correct option is Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. This matches Genetic engineering because students must explain that genetic engineering can give an organism a desired characteristic.. Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. This matches Genetic engineering because students must explain that genetic engineering can give an organism a desired characteristic. is correct because DNA is the molecule; a gene is a functional section of that molecule. The learning objective says students must explain that genetic engineering can give an organism a desired characteristic, so the answer must stay inside Genetic engineering. The alternative options are wrong because they either treating dna as if it always means one gene., calling a gene a whole chromosome., or drift away from when asking about dna, test molecular structure, base sequence, nucleotides, or genetic information storage..