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What does "lac" refer to in what we call the lac operon?

1. The number 1,00,000
2. Lactose
3. Lactase
4. Lac insect

Correct answer: Lactose

Solution

The lac operon is named for lactose because it regulates genes involved in lactose metabolism. In this context, “lac” is shorthand tied to lactose, the sugar that induces the operon.

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