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cali maxamad yaxye

what is D.N.A

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1 Answer

  1. DNA, or deoxyribonucleic acid, is a molecule that contains the genetic instructions for the development, functioning, and reproduction of all known living organisms. It is often referred to as the “building block of life” due to its fundamental role in genetics.

    DNA is a long, double-stranded helical structure composed of nucleotides. Each nucleotide consists of a sugar molecule (deoxyribose), a phosphate group, and one of four nitrogenous bases: adenine (A), cytosine (C), guanine (G), and thymine (T). The nucleotides form pairs between the two DNA strands, with adenine pairing with thymine (A-T) and cytosine pairing with guanine (C-G).

    The sequence of these nitrogenous bases along the DNA molecule forms the genetic code that carries instructions for the synthesis of proteins and other cellular components. DNA encodes the hereditary information that is passed from parents to offspring and is responsible for the inheritance of traits and characteristics.

    The structure of DNA was discovered by James Watson and Francis Crick in 1953, and their findings revolutionized our understanding of genetics and molecular biology. DNA analysis and sequencing techniques have since become fundamental tools in fields such as medicine, forensic science, evolutionary biology, and biotechnology.

    The discovery and understanding of DNA have had profound implications in various scientific disciplines and have contributed to advancements in medicine, agriculture, and our understanding of the complexity and diversity of life on Earth.

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