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  1. Gene - Wikipedia

    Genes evolve due to natural selection and genetic drift of the alleles. When a gene is duplicated, the new copy can evolve a new function.

  2. 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 …

  3. What Is a Gene? - Cleveland Clinic

    Jul 9, 2025 · Genes are segments of DNA that give your cells instructions for specific traits or body functions. Different versions of the same gene are called alleles.

  4. What is a gene?: MedlinePlus Genetics

    May 21, 2024 · A gene is the basic physical and functional unit of heredity. Genes are made up of DNA and each chromosome contains many genes.

  5. 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 …

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

    Aug 3, 2025 · To ask what genes are and where they’re found in the cell is to open a doorway into the most intricate and astonishing story ever told—the story of life. Genes are not merely …

  7. Genes: Function, makeup, Human Genome Project, and research

    Jan 11, 2024 · Genes are made of DNA, which determines what an organism is like, its appearance, how it survives, and how it behaves in its environment. All living beings have …

  8. Gene

    2 days ago · Genes are passed from parents to offspring and contain the information needed to specify physical and biological traits. Most genes code for specific proteins, or segments of …

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

    Each gene holds the blueprint for a particular task or characteristic, dictating everything from physical features to the unseen activities within our cells. The instructions provided by genes …

  10. Genes and Chromosomes - Fundamentals - MSD Manual …

    Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body or the code for functional ribonucleic …