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A HFR bacteria mates with an F- plasmid containing bacteria. What will be the type of bacteria after conjugation is complete?

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A HFR bacteria mates with an F- plasmid containing bacteria. What will be the type of bacteria after conjugation is complete?

(a) F+

(b) F-

(c) F’

(d) HFR

I had been asked this question during an online interview.

I would like to ask this question from Gene Mapping in Bacteria by Conjugation topic in section Genomics : The Mapping and Sequencing of Genomes of Cytogenetics

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The correct option is (b) F-

Explanation: In HFR rarely the complete chromosome can be transferred from one bacterium to other due to the continuous motion of the medium. Here only partially the genes from Ori of transfer till the point where conjugation channel is broken gets transferred. As the full F plasmid can thus never be transferred so it is F-.

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