describe the different roles in an ecosystem by what an organism eats and its relationship to the other organism

According to the cladogram, which organisms have roundworms as a common ancestor?

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

Recombinant dna (rdna) creates offspring which are genetically identical to the parent is the process of breeding only organisms with desirable traits involves the removal of the nucleus of a cell combines genes from organisms of different species in a lab