Question

The first step in formation of a mature RBC from a hemocytoblast is the?

1) Differentiation of a myeloid stem cell to a proerythroblast
2) Differentiation of a basophilic erythroblast into a normoblast
3) Development of a reticulocyte from a normoblast
4) Proerythroblast differentiated into a reticulocyte

Answer 1

The first step in RBC formation from a hemocytoblast is the differentiation of a myeloid stem cell to a proerythroblast, part of the complex process called hemopoiesis.

Step-by-step explanation:

The first step in the formation of a mature red blood cell (RBC) from a hemocytoblast is the differentiation of a myeloid stem cell into a proerythroblast. This process is part of hemopoiesis, which involves several stages of precursor cells, including proerythroblasts that eventually become reticulocytes. Reticulocytes continue to mature and eventually eject their nucleus and most other organelles to become erythrocytes, which are the most abundant formed elements in blood.