Answer:
So that each cell has a full copy of DNA
Explanation:
<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>
Because of the Law of Segregation, the ratio would be 1:3. Meaning 3 kids with lactase persistence.
