Cloning recombinants.
<P>
   A  restriction  enzyme  is  used  to  insert a hummingbird gene into a
   plasmid,  which  acts as a cloning vector and placed back into E. coli
   cells.
<P>
   The  plasmid  genes amp^R (ampicillin resistance) and lacZ are used as
   genetic markers to screen for E. coli cells containing the recombinant
   gene of interest.
<P>
   Once identified, the recombinant E. coli cells are cloned to make many
   copies of the gene of interest.
<P>
   Tutorial:  <A ClAsS=ACT Href="http://media.pearsoncmg.com/bc/bc_campbell_biology_7/media/activities/load.html?20&amp;C" oNClick="popact('http://media.pearsoncmg.com/bc/bc_campbell_biology_7/media/activities/load.html?20&amp;C');txtcolor('cloning2','gray');return false;" Id=cloning2><iMg sRc="/images/tutorial.gif" aLt='' boRDer=0></A>