gene

noun

plural genes
: a specific sequence of nucleotides in DNA or RNA that is located usually on a chromosome and that is the functional unit of inheritance controlling the transmission and expression of one or more traits by specifying the structure of a particular polypeptide and especially a protein or controlling the function of other genetic material

Examples of gene in a Sentence

She inherited a good set of genes from her parents.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Boxer Imane Khelif admitted to having the SRY gene, located on the Y chromosome, which is found in biological males, and undergoing hormone treatments to lower testosterone levels ahead of the 2024 Olympics in an interview with the French sports publication L'Equipe. Jackson Thompson, FOXNews.com, 6 Feb. 2026 Specifically, these genes are tied to inflammation and immune system responses, as well as wound closure. Andrew Paul, Popular Science, 5 Feb. 2026 The bill would prohibit the importation, sale, and offer of sale of pets that are transgenic, meaning they are created by implanting a gene from one species into another. Kate Wolffe, Sacbee.com, 4 Feb. 2026 Now the architects of the Alpha platform are pushing beyond proteins into genomics, seeking to decipher how the vast regulatory regions of DNA shape when, where, and how genes are turned on and off. Elie Dolgin, IEEE Spectrum, 4 Feb. 2026 See All Example Sentences for gene

Word History

Etymology

German Gen, short for Pangen, from pan- + -gen

First Known Use

1909, in the meaning defined above

Time Traveler
The first known use of gene was in 1909

Cite this Entry

“Gene.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/gene. Accessed 9 Feb. 2026.

Kids Definition

gene

noun
: 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 bodily trait or activity (as eye color or metabolism) or that influences or controls the activity of another gene or genes

Medical Definition

gene

noun
: a specific sequence of nucleotides in DNA or RNA that is located usually on a chromosome and that is the functional unit of inheritance controlling the transmission and expression of one or more traits by specifying the structure of a particular polypeptide and especially a protein or controlling the function of other genetic material

called also determinant, determiner, factor

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