Which of the following types of bacteria are able to initiate the formation of a pili for bacterial conjugation? a) F+ b) Hfr c) None of these answers d) F-
Which of the following types of bacteria are able to initiate the formation of a pili for bacterial conjugation? a) F+ b) Hfr c) None of these answers d) F-
Answered
The correct answers are a) F+ and b) Hfr. Both F+ (fertility factor positive) and Hfr (high-frequency recombination) bacteria have the necessary genetic material to initiate the formation of a pilus, which is essential for the conjugation process. F+ cells contain an F plasmid that allows them to form a sex pilus and transfer genetic material to F- (fertility factor negative) cells. Hfr cells, which have the F plasmid integrated into their chromosomal DNA, can also initiate pilus formation and transfer not only plasmid DNA but also chromosomal DNA to the recipient cell. F- cells, on the other hand, lack the F plasmid and therefore cannot initiate pilus formation or conjugation by themselves.
BNO Team