Which of the following statements describe a reason ribosomal genes are useful for comparing evolutionary relationships among organisms?
A. It is possible to compare the large subunit genes with the small subunit genes.
B. Ribosomes of prokaryotes and eukaryotes are identical.
C. There are many differences in these genes, even among closely related species.
D. All organisms possess these genes and they can be compared with each other.
E. These are the only genes that have been sequenced for every organism on Earth.
Answer: D
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What will be an ideal response?
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