DNA contains genetic information from "summary" of Human Biology by Cecie Starr,Beverly McMillan
The genetic information that determines the characteristics of living organisms is stored in the molecules of DNA, or deoxyribonucleic acid. This molecule is present in the nucleus of every cell in the body, and it carries the instructions for building and maintaining an organism. DNA is made up of two long strands that are twisted into a double helix structure, resembling a twisted ladder. Each strand of the DNA molecule is made up of units called nucleotides. These nucleotides consist of a sugar molecule, a phosphate group, and one of four nitrogenous bases: adenine (A), thymine (T), guanine (G), and cytosine (C). The sequence of these nitrogenous bases along the DNA strand forms a genetic code that determines ...
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