Q. Phylum proteobacteria is subdivided into α, β, γ, δ and ε-proteobacteria based on (A) G + C content (B) 23S rRNA sequences (C) tRNA sequences (D) 16S rRNA sequences 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (D) 16S rRNA sequences