<span>The gene sequence containing an operator, promoter and repressor is known as an operon. These genes are called as structural genes. the operon is regulated by the presence/absence of the inducer such as glucose/lactose. It may also be a constitutive operon, which works all the time.</span>
There might be no food or places to live!
Rolls in mud to cool off and deter flies
The answer is 4Fe+3O2→2Fe2O3
