Similar to the trp operon, the genes encoding proteins for histidine synthesis are in a his operon that is under attenuation control. Select one:

Similar to the trp operon, the genes encoding proteins for histidine synthesis are in a his operon that is under attenuation control.

Select one:

a. The his operon leader sequence probably contains several His codons in a row

b. Does not contains adjacent codons for histidine.

c. It is impossible to predict what codons are in the leader sequence

d. contains adjacent codons for tryptophan.