A) \[nod,\text{ }nif\]
B) \[nod,nfx\]
C) \[nod,\text{ }nix~\]
D) \[ndx,\text{ }nif\]
Correct Answer: A
Solution :
The gene cluster of \[nod.nif\]in bacteria are responsible for nitrogen fixation, nod genes are the important signaling molecules in the symbiotic interaction \[Rhizobium\]and leguminous plants. \[nif\]Genes encoding enzymes are involved in fixation of atmospheric nitrogen. The primary enzyme encoded by \[nif\] 'genes is the nitrogenase complex, which convert atmospheric nitrogen to other forms.
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