Question

Normal conjugation frequency between $F^{+}$ and $F^{-}$ Escherichia coli is?

• A. $1:1000$
• B. $1:10,000$
• C. $1:100,000$
• D. $1:10$

Answer 1

Answer: (A)

$1:1000$

The transfer of the F plasmid from F${}^{+}$ to F${}^{-}$ Escherichia coli is done by conjugation process. Conjugation is the process by which genetic material is transferred from donor bacterium to recipient bacterium through direct contact by forming a bridge. Donor bacterium contains a DNA sequence called the fertility factor. The frequency of this conjugation is 1:1000.

Thus, the correct answer is '1:1000.'