Multiple choice Which of the following is an incorrect statement? Mature mammalian erythrocytes are enucleated. Formation of RBC's is known as Erythropoiesis. A hormone called Erythropoietin regulates the production of RBC's. RBC's arise from haemocytoblasts in the stem cells of bone marrow. The lifetime of RBC's is about 120 days. Reveal answer Fill a bubble to check yourself C Correct answer Explanation The hormone Erythropoietin regulates the production of RBC's.