Which option gives the correct cause-and-effect relationship for The development of understanding of genetics and evolution, Fossils: students must explain why the fossil record is incomplete, including soft-bodied organisms and geological activity.

The correct option is Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. This matches Fossils because students must explain why the fossil record is incomplete, including soft-bodied organisms and geological activity.. It is the only option that keeps DNA vs genes separate and answers the approved learning objective in Fossils.

The correct option is Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. This matches Fossils because students must explain why the fossil record is incomplete, including soft-bodied organisms and geological activity.. Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. This matches Fossils because students must explain why the fossil record is incomplete, including soft-bodied organisms and geological activity. is correct because DNA is the molecule; a gene is a functional section of that molecule. The learning objective says students must explain why the fossil record is incomplete, including soft-bodied organisms and geological activity, so the answer must stay inside Fossils. 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..