Question 5
1 pts
A mating between a Hfr met arg str
^(5)
strain and F-met- arg- str
^(4)
strain is performed. On what medium should the resulting cell mixture be plated to isolate met arg
^( )
st
^(R)
recombinants from the original parent cells? In other words, what medium would allow the desired recombinants to live while killing off the parent straihs.
(met - the amino acid methionine, arg - the amino acid arginine, str - streptomycin antibiotic)
Medium containing methicnine and argivine and lacking streptomycin.
Medi-mistikie methingine and arepinine and containing streptomecin.
Medium containing all three chemicals: methionine, arginise, and streptomycin.
Medium lacking all three chemicals: methionine, arginine, and streptomycin.