Which option best identifies the exact concept boundary for The development of understanding of genetics and evolution, Fossils: students must describe fossil formation when parts of organisms are replaced by minerals as they decay.

The correct option is Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches Fossils because students must describe fossil formation when parts of organisms are replaced by minerals as they decay.. It is the only option that keeps DNA vs genes separate and answers the approved learning objective in Fossils.

The correct option is Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches Fossils because students must describe fossil formation when parts of organisms are replaced by minerals as they decay.. Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches Fossils because students must describe fossil formation when parts of organisms are replaced by minerals as they decay. is correct because DNA can contain many genes; a gene has a specific coding role. The learning objective says students must describe fossil formation when parts of organisms are replaced by minerals as they decay, so the answer must stay inside Fossils. 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..