british bacteriologist frederick griffith discovered that dna can be transferred from one bacterium to another.
british bacteriologist frederick griffith discovered that dna can be transferred from one bacterium to another.
who discovered that dna can be transferred from one bacterium to another?
british bacteriologist frederick griffith
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in bacterial conjugation, where dna is transferred between bacteria through direct cell-to-cell contact, homologous recombination helps integrate foreign dna into the host genome via the recbcd pathway. the recbcd enzyme promotes recombination after dna is converted from single-strand dna–in which form it originally enters the bacterium–to double-strand dna during replication. the recbcd pathway is also essential for the final phase of transduction, a type of horizontal gene transfer in which dna is transferred from one bacterium to another by a virus. foreign, bacterial dna is sometimes misincorporated in the capsid head of bacteriophage virus particles as dna is packaged into new bacteriophages during viral replication. when these new bacteriophages infect other bacteria, dna from the previous host bacterium is injected into the new bacterial host as double-strand dna. the recbcd enzyme then incorporates this double-strand dna into the genome of the new bacterial host.
homologous recombination