The name for all organisms that get their nutrients and energy from other organism are called parasites.
Omg going to say A I could be wrong
HOXC8 gene encodes a protein that has a role in the development of the cartilage. This gene is a member of the HOX group gene that enables the differentiation of the body segments. These genes encode for transcription factors that activate the expression of other specific genes guiding the differentiation of body segments into specific structures.