What’s horizontal DNA transfer?
Genome indicate that gene transfer
between phylogenetically distant members of
one domain or more have impact on evolution
What mobile elements exists?
plasmids
Phages
Transposable elements
What kind of DNA can be taken up?
1. Circular DNA (plasmids)
-mostly in E. Coli
-not degraded as readily, by endonucleases
-replicate autonously
2. Linear DNA (plasmids, chromosomal DNA)
-DNA can recombine with host DNA
-DNA gets degraded
Which factors affect natural transformation?
-DNA amount, size& state
-DNA sensitivity to nucleases
-DNA sequence
-competence of the recipient
-> Al
What’s mobile DNA?
-Plasmids (linear, circular
-Transposons& Retrotransposons
-Insertion elements (Is)
-Integrons
-Genomic Islands
Last changeda month ago