[Campbell Biology P.514] Based on the table titled "Genomes vary in size, number of genes, a... | Practice Question
Based on the table titled "Genomes vary in size, number of genes, and gene density," which statement accurately compares the characteristics of Bacteria, Archaea, and Eukarya?
A: Eukaryotes consistently possess larger genome sizes and gene numbers compared to Bacteria and Archaea, along with higher gene density.
B: Introns are generally absent in protein-coding genes of Bacteria but are present in some genes of Archaea and most genes of multicellular Eukaryotes.
C: Both Bacteria and Archaea contain large amounts of repetitive noncoding DNA, similar to multicellular Eukaryotes.
D: Gene density is lower in prokaryotes (Bacteria and Archaea) than in eukaryotes, and within eukaryotes, lower density correlates with smaller genomes.
Explanation
The table clearly states that introns are 'None in protein-coding genes' for Bacteria, 'Present in some genes' for Archaea, and 'Present in most genes of multicellular eukaryotes, but only in some genes of unicellular eukaryotes' for Eukarya. Option B accurately reflects these distinctions.