Tuesday, July 14, 2009

Can someone help me on this? the genes a, b, c in the following table are from the lac operon of E. coli. one?

represents the repressor (i); another the operator (o); and the third, the structural gene for B. galactose (z). study the data and decide which gene (o,i, or z) each of the three is, and explain briefly in each case how you decided.


Genotype of Bacterium Activity of the z Gene


- Inducer +Inducer


a- b+ c+ + +


a+ b+ c- + +


a+ b- c+ - -


a+ b- c+/ a- b+ c- + +


a+ b+ c+/ a- b- c- - +


a+ b+ c-/a- b- c+ - +


a- b+ c+/a+ b- c- + +

Can someone help me on this? the genes a, b, c in the following table are from the lac operon of E. coli. one?
a- b+ c+ + +


a+ b+ c- + +


a+ b- c+ - -


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