Chromosomes occur in pairs (in most somatic cells) since one member of each pair comes from the mother and the other from the father. In most prokaryotes, the chromosome is usually a circular strand of DNA; hence, the entire genome is carried on only one chromosome.
Thus, an average diet of 1,900 calories per day would dictate an intake of 1,900 ml (approximately 64 ounces) of water. However, people interpreted this as a recommendation to drink 1,900 ml of pure water, forgetting the fact that water is also found in abundance in the other liquids and foods we consume.
Each day, your water intake is about 2000-3000 mL (2-3 liters). You take in about 1200 mL from fluids, 1000 mL from solid food, and 300 mL from oxidation (metabolism). Your daily output is also about 2000-3000 (as long as you are healthy and do not have a fluid/electrolyte imbalance).