Their is AB, O, B, and A. Which is four. If your were to include whether the blood type was a Negative blood type and positive blood type they're would be . AB+, O+, B+, A+, AB-, O-, B-, A-. Which is eight.
C. nerve cells.............................
The membrane of an organelle or cell is comprised of proteins circulating in a phospholipid bilayer.
The proteins in membranes are the ones which can facilitate chemical reactions.
Have a goed day
Only a Punnet square with one homogeneous dominant would produce 100% dominant trait offspring.
A. - A Few Days After Fertilization.