These structures are responsible for the internal morphological framework of the cell.

Endoplasmic reticulum (ER)

Explanation:

 The endoplasmic reticulum is the type of tabular structure which basically provide the internal framework structure in cell. It mainly connect the nucleus with the membrane of the plasma.

The ER is the form of the series in the cytoplasm that serve the various types of multiple function for modification and also transport the protein in the membrane. The ER structure is basically responsible for internal morphological in the cell.    

answer; i believe the answer is (polygenic inheritance;