Question

The frequency of recombination is

• A. Same for all genes
• B. Highest for genes that first entered the recipient cells
• C. Lowest for genes that first entered the recipient cells
• D. None of the above

Answer 1

The correct option is B Highest for genes that first entered the recipient cells

The frequency of recombinants determines the order of entry for each gene. During the process of conjugation, the genes are transferred through the conjugation tube. Spontaneous breakage of this tube creates a natural gradient of transfer. There are fewer chances that the latter genes will be received by the bacterial cell. The gene which enters the first in the cell has the maximum frequency of recombination compared to the other latter genes.

Thus, the correct answer is option B.