Why does the red blood cells don't have possess a nucleus ???
Dear most of the major functions of the red blood cells are displayed in the cytoplasm where you can get the haemoglobin.
RBCs has a oxygen caring capacity via hemoglobin. It also allows the cell to have its distinctive bi-concave shape which aids diffusion - this shape would not be possible if the cell had a nucleus in the way. In some mammals ex. camel RBCs are nucleated.
Mature red blood cells (RBCs) do not possess nucleus along with other cell organelles such as mitochondria, Golgi apparatus and endoplasmic reticulum in order to accommodate greater amount of haemoglobin in the cells. However, immature red blood cells contain nucleus.
@ Dr. Dharmesh Chandra Sharma
Mature red blood cells (RBCs) of camels also do not contain nucleus.
The absence of a nucleus is an adaptation of the red blood cell for its role. It allows the red blood cell to contain more hemoglobin and, therefore, carry more oxygen molecules. It also allows the cell to have its distinctive bi-concave shape which aids diffusion. This shape would not be possible if the cell had a nucleus in the way.
Mature RBC lack nucleus to increase the haemoglobin which increases the oxygen transport as well as maintaining the bi-concave shape that help in easy diffusion in blood vessels.
Only RBCs don't have nucleus. All other types of blood cells have nucleus. The nucleus is actually the control center of a cell. It has DNA in it which is required for reproduction of any cell. However, the function of RBCs is very simple. They just carry chemicals around. A RBC has haemoglobin in it which carries oxygen. The RBCs don't need to reproduce as simply more RBCs can be produced by the red bone marrow in a process called erythropoesis.
Nucleus takes up a lot of space in a cell and since RBCs don't actually do any of the functions which are nucleus's responsibility, evolution figured it out that it's more logical to just exclude them from the RBCs. This space can be used to fit in more haemoglobin.
It allows the red blood cell to contain more hemoglobin and, therefore, carry more oxygen molecules. It also allows the cell to have its distinctive bi-concave shape which aids diffusion. This shape would not be possible if the cell had a nucleus in the way.
RBC have to travel in small capillaries ,. It bi-concavity shape helps that and provide more area for gas exchange. It is not possible for nucleated cell.
To have more hemoglobin content as compared to the cells volume .
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