Multiple Choice
Some Gram-negative bacteria branch more deeply from the proteobacteria than the five Greek-lettered classes do from each other. Which phyla listed below is deep-branching Gram-negative?
A) Thermotogo
B) Aquifex
C) Flavobacteria
D) Protobacteria
E) Chlorobi
Correct Answer:

Verified
Correct Answer:
Verified
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