Scientists have determined the genome sizes (megabases, Mb), number of genes, an

Question

Scientists have determined the genome sizes (megabases, Mb), number of genes, and gene densities in various species. The data are shown in the graphs 1000 50000 45000 40000 35000 30000 25000 20000 Z 15000 10000 5000 0 puffer fish 100 fruit fly pufler fish rice human wom 10 +human fruit fly yeast 10 100 1000 10000 10 Genome size (Mb) Genome size (Mb) Which accounts for the differences in gene densities between prokaryotes and eukaryotes? Prokaryotes have smaller gene densities than eukaryotes Prokaryotes have similar gene densities to eukaryotes The data do not support any conclusions regarding this issve Prokaryotes have larger gene densities than eukaryotes

Explanation / Answer

Prokaryotes have larger gene densities than eukaryotes.

Bacteria is a prokaryotic organism which has the lowest genome size and genes. However, density (genes per unit genome size) is the highest for bacteria. The highest gene density of prokaryotes is because of less complexities in thier genome (they lack introns in thier sequence).

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