(1) Transformation, which involves donor DNA free in the environment (2) Transduction, in which the donor DNA transfer is mediated by a virus (3) Conjugation, in which the transfer involves cellto-cell contact and a conjugative plasmid in the donor cell Three main processes of genetic recombination in prokaryotes fragments of homologous DNA from a donor chromosome are transferred to a recipient cell
(1) Transformation, which involves donor DNA free in the environment (2) Transduction, in which the donor DNA transfer is mediated by a virus (3) Conjugation, in which the transfer involves cellto-cell contact and a conjugative plasmid in the donor cell Three main processes of genetic recombination in prokaryotes fragments of homologous DNA from a donor chromosome are transferred to a recipient cell
Conjugation Transformation Transduction
Conjugation Transformation Transduction
Competence A cell that is able to take up a molecule of DNA and be transformed is said to be competent. Transformation
Competence A cell that is able to take up a molecule of DNA and be transformed is said to be competent. Transformation
(a) Binding of free DNA by a membranebound DNA binding protein. (b) Passage of one of the two strands into the cell while nuclease activity degrades the other strand. (c) The single strand in the cell is bound by specific proteins, and recombination with homologous regions of the bacterial chromosome mediated by RecA protein occurs. The introduction of DNA into cells by mixing the DNA and the cell Transformed cell
(a) Binding of free DNA by a membranebound DNA binding protein. (b) Passage of one of the two strands into the cell while nuclease activity degrades the other strand. (c) The single strand in the cell is bound by specific proteins, and recombination with homologous regions of the bacterial chromosome mediated by RecA protein occurs. The introduction of DNA into cells by mixing the DNA and the cell Transformed cell
The mechanism of bacterial transformation
The mechanism of bacterial transformation