The plasmid pBR322 has both Amp-R (resistance to ampicillin) and Tet-R (resistance to tetracycline) genes. In the Tet-R gene, there is a unique XbaI site. If you insert a piece of DNA into this XbaI site, how will you select for your recombinant DNA?

Can bacteria reproduce in a way such that when you start out with two bacteria, you get five bacteria? why or why not? * a. yes, because bacteria reproduce sexually, and can produce any number of offspring, just as humans do. b. no, because bacteria grow at an exponential rate. c. no, because when bacteria reproduce, they split into two parts, and two bacteria splitting would result in four bacteria.

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.

What gases are carried by the blood