The cellular differentiation is a biological process i which each cell<span> becomes increasingly specialized in form and function.</span><span>
Cellular differentiation progressively restricts cell fate because the unexpressed genes in the cell </span>become less densely packed and undergo irreversible repression
It is because Prokaryotic cells has a unicellular structure compared to Eukaryotic cells which has a Multicellular structure.
Heart rate or pulse I think.