Q. Formation of erythrocytes are called erythropoiesis. In early few weeks of embryonic life primitive nucleated RBC’s are produced in the

1. Liver
2. Yolk sac
3. Bone marrow
4. Both 2 and 3

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Please find answer to your question below:

Correct answer is 4. Both 2 and 3
In the embryonic life, the primotive nucleated RBC’s are produced from the yolk sac. In later stage of embryonic life RBC’s mainly produced by the liver.