During genetic engineering Vector with foreign DNA is transferred into a host bacterium. The next target will be the selection of transformants from non- ‘ transformants.How antibiotic resistance and insertional inactivation is exploited for this purpose?

During genetic engineering Vector with foreign DNA is transferred into

1.	During genetic engineering Vector with foreign DNA is transferred into a host bacterium. The next target will be the selection of transformants from non- ‘ transformants.How antibiotic resistance and insertional inactivation is exploited for this purpose?
Answer» Antibiotic gene is used us selectable marker to identify the recombinants from non recombinant. Insertional inactivation is used to identify the transformants as white coloursed and non transformants as blue coloured.