2006-12-12 17:41:01 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Biology
there isn't any proven theory to your question
but a most probable reason is to allow a higher surface area for oxygen transfer (bi-concave shape).
2006-12-12 17:48:02 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Immature RBC are called as reticulocytes. They develop from the bone marrow. and the reason for the difference between reticulocytes and RBC is because The nucleus is shed as erythroblasts transform into reticulocytes. Reticulocytes are larger because of their semi-immature cytoplasm, which still contains RNA and some organelles. There can be tiny nuclear fragments left behind, but, in general, reticulocytes lack a nucleus.
2006-12-12 17:49:51 · answer #2 · answered by rashmir 2 · 0⤊ 0⤋
RBC need to make room to carry oxygen. They have to fit through tiny capillaries (even lining up one at time to get through) to deliver oxygen to all parts of the body. So they can't have all that bulk of a nucleus, I guess.
2006-12-12 18:32:07 · answer #3 · answered by jar 3 · 1⤊ 0⤋