Low-frequency rescue of a genetic marker in deoxyribonucleic acid from Bacillus bacteriophage phi 105 by superinfecting bacteriophage.

Abstract

Markers in gene L, which maps at the right end of the vegetative and prophage maps, are rescued at a strongly reduced frequency from mature phi105 deoxyribonucleic acid (DNA) by superinfecting phage but at high frequency from vegetative and prophage DNA. It is suggested that the ends of mature DNA are degraded when DNA is taken up by competent cells.