They are manufactured by cells called megakaryocytes.
Bacterial cell walls are made of peptidoglycan (also called murein), which is made from polysaccharide chains cross-linked by unusual peptides containing D-amino acids. ... Gram-positive bacteria possess a thick cell wall containing many layers of peptidoglycan and teichoic acids.
I think you forgot to give the options related to the question. So it becomes a bit hard to answer the question perfectly, still i would do my best and hope that it comes to your help. Prior to the ideas presented by Charles Darwin concerning evolution, several alternating theories had been developed and they included all but the DNA differences within a species lead to some individuals being better able to survive. This theory was developed after Darwin came up with his theory..
The answer is Cri Du Chat
