
Gene - Wikipedia
In biology, the word gene has two meanings. The Mendelian gene is a basic unit of heredity. The molecular gene is a sequence of nucleotides in DNA that is transcribed to produce a functional RNA.
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 (such …
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.
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 proteins, which are …
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.
GENE Definition & Meaning - Merriam-Webster
: a part of DNA or sometimes RNA that is usually located on a chromosome and that contains chemical information needed to make a particular protein (as an enzyme) controlling or influencing an inherited …
What Are Genes, DNA, and Chromosomes? Mapping the Human …
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 made …
Definition of gene - NCI Dictionary of Genetics Terms
Genes are made up of sequences of DNA and are arranged, one after another, at specific locations on chromosomes in the nucleus of cells.
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 have two …
Genes and Chromosomes - Fundamentals - MSD Manual Consumer …
A gene is a segment of DNA that provides the code to construct a protein or RNA molecule. The DNA molecule is a long, coiled double helix that resembles a spiral staircase.