Hamer D H
Science. 1977 Apr 8;196(4286):220-1. doi: 10.1126/science.403605.
Recombinants were constructed between various Escherichia coli plasmids and fragments of Drosophila melanogaster DNA. These recombinant plasmids are nonconjugative, but can be mobilized from one cell to another by conjugative sex factors. Of 47 recombinants studied, 46 were mobilized at approximately the same or slightly lower frequencies than the parental plasmids, whereas one was mobilized 1000 times less efficiently.
