science
The human body's genetic instructions are stored as a long molecule coiled tightly inside the nucleus of nearly every cell.
DNA, or deoxyribonucleic acid, is the molecule that carries genetic information inside nearly every cell in the human body. It is built from a long sequence of four chemical bases whose specific order acts like an instruction manual, encoding everything needed to build and run the proteins that make up a living organism.
ATP is a molecule cells use for energy rather than genetic storage, and RNA polymerase is actually an enzyme that helps read DNA to build other molecules, not the genetic information itself, so neither one is the storage molecule described here.
If you stretched out all the DNA packed inside a single human cell, it would measure about two meters long, yet it fits inside a nucleus only a few micrometers wide because it coils tightly around helper proteins called histones, like thread wound around a spool.
science
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