Your genetic legacy is contained within the sequence of nucleotides on your chromosomes.explain
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DNA (or deoxyribonucleic acid) is the molecule that carries the genetic information in all cellular forms of life and some viruses. It belongs to a class of molecules called the nucleic acids, which are polynucleotides - that is, long chains of nucleotides.
Each nucleotide consists of three components:
a nitrogenous base: cytosine (C), guanine (G), adenine (A) or thymine (T)
a five-carbon sugar molecule (deoxyribose in the case of DNA)
a phosphate molecule
The backbone of the polynucleotide is a chain of sugar and phosphate molecules. Each of the sugar groups in this sugar-phosphate backbone is linked to one of the four nitrogenous bases.
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