Respuesta :
Eukaryotic genomes comprise mostly noncoding DNA, whereas prokaryotes have mostly coding DNA. So the correct option is (b).
Prokaryotic chromosomes are found in the nucleoid, while those of eukaryotes are found inside the nucleus. Eukaryotic cells contain a membrane-bound nucleus (as well as membrane-bound organelles), whereas prokaryotic cells have not. This is the primary distinction between the two types of cells.
Prokaryotic genomes have less noncoding DNA compared to eukaryotic genomes, which have a lot of it. Bacteria typically have circular chromosomes, whereas eukaryotes typically have linear chromosomes. Eukaryotes and prokaryotes both have negatively supercoiled double-stranded DNA.
Therefore, eukaryotic genomes comprise mostly noncoding DNA, whereas prokaryotes have mostly coding DNA. So the correct option is (b).
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