DNA stores the information needed to form a cell. Cells jointly organized the function of human organs. DNA molecules as tightly twisted threads of chromosomes. There are 46 chromosomes in the nucleus of almost every kind of cell. DNA molecules are arranged in two strands of yarn with a number of interwoven spirals form a structure called a double helix. Both threads are united by four special chemicals called bases. The exact sequence of bases along the DNA molecule is the password command in the process of formation and functioning of the cell.
The structure of DNA was discovered in 1953 by two scientists that Francis Crick and Rosalind Franklin who came from England, and biochemist James Watson from the United States.
Title Post: What is DNA?
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