<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>
An ocean trench forms when two oceanic plates come together and one of the plats goes down. The movement of one plate moving beneath another is called seduction
