In the interaction between two types of organisms in a habitat, one organism benefits from its interaction from the other but the other organism suffers. what is the name for this interaction?

Dna, in the nucleus carries the genetic code for making proteins in ribosomes. in the diagram, b, represents the proteins produced. dna cannot leave the nucleus to carry the genetic information to the ribosome where proteins are produced. how does the genetic code get from the nucleus to the ribosome? what does a represent? now