In Näsvall's experiments, the purpose of the mutation to the HisA enzyme in Salmonella was to
A) create a promiscuous enzyme that could only synthesize histidine.
B) create a promiscuous enzyme with the ability to synthesize histidine and tryptophan.
C) create a paralog of a promiscuous enzyme.
D) simulate a gene duplication event.

Question

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The purpose of the mutation to the HisA enzyme in Näsvall's experiments was to create a promiscuous enzyme that could synthesize both histidine and tryptophan, demonstrating the enzyme's ability to evolve new functions.

In Näsvall's Experiments, the Purpose of the Mutation to the HisA