試題詳解

36. During conjugation between Hfr cell and an F- cell, what happened?
(A) All the F- cells become Hfr cells.
(B) All the F^- cells become F⁺ cells.
(C) Genes from the Hfr cell may replace genes of the F^- cells by recombination.
(D) The chromosome of the F^- cell is completely replaced by the chromosome of the Hfr cell.
(E) DNA from the F^- cell transfers to the Hfr cell and DNA from the Hfr cell transfers to the F^- cell.