Explain how transposable elements may cause recombination of bacterial dna.

Insertional inactivation is the inactivation of a gene upon insertion of another gene inside in its place or within its coding sequence. This video also explains the selection of recombinant colonies in selective antibiotic medium by insertional inactivation.

Six amino acids have side chains that are polar but not charged. these are serine (ser), threonine (thr), cysteine (cys), asparagine (asn), glutamine (gln), and tyrosine (tyr). these amino acids are usually found at the surface of proteins, as discussed in the proteins 2 module.