some members of the order Artiodactyla such as camel
Human being do not have nucleus in red blood cells
A frog has a nucleus in matured RBC.
Nucleus is a large organell.Lackness of a nucleus gives a large space for haemoglobin.
Mammal RBC's do have nuclei in them in their early stages, but by the time they reach maturity the nucleus is gone. There is no need for the nucleus after maturity since the cell's function is fairly passive. A nucleus would be required if the cell needed to produce a product or perform a task like cell division, but since it doesn't need to do these things a nucleus is not necessary. The nucleus is required at the early stages in order to produce the hemoglobin that eventually fills the cell. If the nucleus didn't disappear it would either make the cell too large to slip through capillaries or would reduce the oxygen carrying ability of the cell by displacing some of the hemoglobin that would fill it.
mitochondria and nucleus
No. Red blood cells (RBC) for example, do not contain a nucleus. Also, prokaryotes do not.
A frog has a nucleus in matured RBC.
RATS
Yes.
Camel
a rbc has no nucleus
You have about 25 trillions of RBC in your blood. They do not have nucleus in them and so no DNA. WBC has a nucleus and contains the DNA.
camels have nucleus in their RBC's.
Nucleus is a large organell.Lackness of a nucleus gives a large space for haemoglobin.
none if a mammal doesnt have a spine then it is not a mammal
This is a freak accident in the mammalian lineage.
They are cells that have or contain nucleus , as compared to RBC that are enucleated
Though RBC does not have organelles nor Nucleus it can live for about 120 with the help of the enzymes involved in glycolysis reaction , and remember the definition of cell , it is a living unit of life and rbc is living cell