Which option best identifies the exact concept boundary for The development of understanding of genetics and evolution, Extinction: students must describe new diseases, predators or competitors as possible contributors to extinction.

The correct option is Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches Extinction because students must describe new diseases, predators or competitors as possible contributors to extinction.. It is the only option that keeps DNA vs genes separate and answers the approved learning objective in Extinction.

The correct option is Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches Extinction because students must describe new diseases, predators or competitors as possible contributors to extinction.. Definition boundary: DNA can contain many genes; a gene has a specific coding role. This matches Extinction because students must describe new diseases, predators or competitors as possible contributors to extinction. is correct because DNA can contain many genes; a gene has a specific coding role. The learning objective says students must describe new diseases, predators or competitors as possible contributors to extinction, so the answer must stay inside Extinction. 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..