Multiple choice

Nif genes occur in which of the following?

  1. Rhizobium

  2. Aspergillus

  3. Penicillium

  4. Streptococcus

  5. -
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A Correct answer
Explanation

Nif genes are gene encoding enzymes that are involved in the fixation of atmospheric nitrogen into a form of nitrogen that is available to living organisms. Transcription of nitrogen fixation genes in these bacteria is induced primarily by low-oxygen conditions. Rhizobium is a symbiotic bacteria that is found in the root nodules of leguminous plants.

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