Blood with 90+ answers. The amount of blood in a human body varies, of course, with the size of that body. Over the range of sizes we usually encounter for average people, this is approximately 7% of body weight. And the density of whole blood, again on average, is about 1.06 grams/ml. So, for example, if a person weighs 185 lbs, in kilograms this converts to about 84 kg body size. Taking 7% of this gives 5.87 kg of blood. Since blood has a density 6% greater than water, this gives a total of 5.54 liters of blood, or 11.7 pints.
DNA replication occurs in the nucleus of almost every cell in the body, and replication takes place when hair or nails grow. Learn about DNA replication, which creates two identical cells, with information from a biology teacher in this free video on science. Part of the Video Series: DNA Structure & Testing.
Replication occurs during interphase. Interphase is the stage of the cell cycle in which cells spend most (typically, more than 90%) of their time and perform their customary functions, including preparation for cell division. When this phase begins, the chromosomes have not yet replicated, but by the beginning of prophase replication is complete, so that each chromosome is composed of two sister chromatids.