DNA

Image DNA

Information

DNA: DNA, or deoxyribonucleic acid, is an essential molecule for life. Present in every cell of our body, it contains the genetic information that determines our physical characteristics and inherits from our ancestors. DNA is composed of two strands coiled into a double helix, forming a stable and resistant structure. Nucleotides, composed of nitrogenous bases (adenine, thymine, cytosine, and guanine), sugars, and phosphate groups, are the constituent elements of DNA. The nitrogenous bases associate specifically: adenine binds to thymine and cytosine to guanine. This complementarity allows DNA replication during cell division. DNA analysis techniques, such as electrophoresis, PCR, or sequencing, have revolutionized biology and medicine. They allow for the identification of genetic diseases, solving criminal investigations, or tracing the evolution of species. Understanding DNA is essential for understanding the functioning of life.

Categorie: Science and Technology

Keywords: DNA, genetics, biology, molecule, helix, nucleotides, replication

Total number of questions (advanced mode): 15

Created: 9 décembre 2023

Updated: 9 décembre 2023

Mascotte Enigmatou

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