The elucidation of the lac operon was the result of close association between the geneticist _____ and the biochemist _____.

Francois Jacob, Jacque Monod

The correct answer is Option (3) → Francois Jacob, Jacque Monod

The elucidation of the lac operon was also a result of a close association between a geneticist, Francois Jacob and a biochemist, Jacque Monod. They were the first to elucidate a transcriptionally regulated system. In lac operon (here lac refers to lactose), a polycistronic structural gene is regulated by a common promoter and regulatory genes. Such arrangement is very common in bacteria and is referred to as operon. To name few such examples, lac operon, trp operon, ara operon, his operon, val operon, etc.