The law of segregation is the Mendel’s laws or principles
explain that traits are passed from parents to offspring individually instead
of as pairs, groups or sets. So the correct option is option “C” as far as the
given question is concerned. This is a law or principle which states that
during the formation of gametes, two copies of each heredity factors separate
out so that the new offspring can get one factor of both the parents. This law
was the first law in this direction.
Solution :
The Arg genes is used to synthesize the arginine. Arginine is chemical building block. It is very important and is used by our body to make the proteins for our body. When the Arg ID is abundant, the expression for the biosynthetic genes must turned off. And if the ArgR behaves as the gene repressor, then the binding of the arginine increases the infinity for the regulatory sites, and allows it to the bind and then shut off the expression of the genes.
If the ArgR acts as the gene activator, then the binding of the arginine would be predicted to reduce the affinity for the regulatory DNA, and preventing the binding and the shutting off the expression for the Arg genes.