Radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium.
You can't have a carrier with a dominant pedigree because other wise than individual or organism would be afflicted by the gene and render them incapable of being a carrier. A carrier is an individual/organism that has a normal phenotype (meaning it is not afflicted by said gene) but is carrying the gene that could cause disease or whatever the affect may be. In this case the gene would have to be homozygous recessive to be expressed. Hopefully this helps!
Answer;
-Northbound APIs
Communication between SDN controllers and routers is governed by Northbound APIs.
Explanation;
-The northbound application programming interface (API) on an SDN controller enables applications and orchestration systems to program the network and request services from it.
-Northbound APIs can enable network functions like path computation, loop avoidance, routing and security. The northbound APIs can also used to facilitate innovation and enable efficient orchestration and automation of the network to align with the needs of different applications via SDN network programmability.