DEFINE: maternal determinant (3-4 sentences). Solution Maternal determinants are some types of molecules which are maternally supplied to the oocyte, the cell which produce fully grown organism, and the molecules regulate various processes by which the fate and developmental pattern of the oocyte is decided. Maternal transcription factors, Maternal signaling molecules, Maternal signaling pathway regulators are types of the biomolecules known as maternal determinants. Mitochondria, Nucleolus, and some Ribosomes also have maternal origin. VegT ( mRNA), Vg1 (mRNA), p53 (Protein), CREB (Protein), FGF2 (mRNA), Ectodermin (Protein), fatvg (mRNA) are some important maternal determinants..