Respuesta :

The given statement is false that the lactose (lac) operon in E. coli is an example of a gene that is expressed when lactose is not available in a cell.

Lactose operon is the set of genes present in the prokaryotic cells that work together in order to conduct the metabolism of lactose. The genes of the operon are expressed when lactose is present and glycose is absent in the cell.

Gene is the most basic and fundamental unit of heredity. it is the factor that contains the information for a particular trait. It is present on the chromosome at a certain specific location. There are several genes present in the living organism's genetic material that code for various traits.

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