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  1. Gene | Definition, Structure, Expression, & Facts | Britannica

    Dec 4, 2025 · gene, unit of hereditary information that occupies a fixed position (locus) on a chromosome. Genes achieve their effects by directing the synthesis of proteins. In eukaryotes …

  2. What Is a Gene? - Cleveland Clinic

    Jul 9, 2025 · What is a gene? Genes are segments of DNA that give your body the instructions for a specific characteristic (trait) or process. DNA is the molecules that make up those …

  3. What is a gene?: MedlinePlus Genetics

    May 21, 2024 · What is a gene? A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called …

  4. Gene - Wikipedia

    We define a gene as a DNA sequence that is transcribed. This definition includes genes that do not encode proteins (not all transcripts are messenger RNA). The definition normally excludes …

  5. Gene

    2 days ago · The gene is considered the basic unit of inheritance. Genes are passed from parents to offspring and contain the information needed to specify physical and biological traits.

  6. Genetics Basics | Genomics and Your Health | CDC

    May 15, 2024 · Genes are specific sections of DNA that have instructions for making proteins. Proteins make up most of the parts of your body and make your body work the right way. You …

  7. What Are Genes and Where Are They Found in the Cell?

    Aug 3, 2025 · To understand what genes are and where they reside inside the cell is to begin to understand life itself—from its simplest forms to the breathtaking intricacies of human thought, …

  8. What Is a Gene and How Do Genes Work? - Biology Insights

    A gene represents a fundamental unit of heredity, containing the information that guides the development and function of a living organism. Each gene holds the blueprint for a particular …

  9. Genes and Chromosomes - Fundamentals - MSD Manual …

    Genes consist of deoxyribonucleic acid (DNA). DNA contains the code, or blueprint, used to synthesize a protein or a ribonucleic acid (RNA) molecule. Genes vary in size, depending on …

  10. What Are Genes, DNA, and Chromosomes? - Verywell Health

    Oct 27, 2025 · Genes are the basic units that determine the traits that we inherit from our parents. 1 They contain coded information found in nearly every cell of the human body. Our genes are …