Question

multiple choice question
the precursors to erythrocytes are __________.
lymphoblasts
proerythroblasts
megakaryoblasts

Explanation:

Erythrocytes are red - blood cells. Proerythroblasts are the precursors in the process of erythropoiesis (red - blood cell formation). Lymphoblasts are precursors of lymphocytes, and megakaryoblasts are precursors of megakaryocytes which produce platelets.

Answer:

proerythroblasts