What did Monod and Jacob study together?
lac operon
DNA replication
Protein synthesis
Cell division
Answer
The lac operon, a regulatory system in bacteria, was discovered by François Jacob and Jacques Monod. They studied how the operon controls gene expression in response to the presence or absence of lactose, a sugar. Their work revealed the mechanism of gene regulation, showing how genes are turned on or off in response to environmental cues. This discovery laid the foundation for understanding gene regulation in all organisms, including humans.
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