What exactly they lose depends on the species, human red blood cells indeed discard organelles and the nucleus.
But having organelles and a nucleus are not the formal definition of a cell. To begin with, any prokaryotes won’t have a nucleus, and organelles aren’t mandatory.
What exactly they lose depends on the species, human red blood cells indeed discard organelles and the nucleus.
But having organelles and a nucleus are not the formal definition of a cell. To begin with, any prokaryotes won’t have a nucleus, and organelles aren’t mandatory.