A chromosome is an organized structure of DNA and protein that's found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions. The word chromosome comes from the Greek (chroma, color) and (soma, body) due to their property of being very strongly stained by particular dyes. Chromosomes vary widely between different organisms. The DN… (More on Chromosome)