Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted. The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov. Updates regarding government operating status and resumption of normal operations can be found at opm.gov.

NLM Logo

Polymorphism, Genetic MeSH Descriptor Data 2026


MeSH Heading
Polymorphism, Genetic
Tree Number(s)
G05.365.795
Unique ID
D011110
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/D011110
Scope Note
The regular and simultaneous occurrence in a single interbreeding population of two or more discontinuous genotypes. The concept includes differences in genotypes ranging in size from a single nucleotide site (POLYMORPHISM, SINGLE NUCLEOTIDE) to large nucleotide sequences visible at a chromosomal level.
Entry Term(s)
Gene Polymorphism
Genetic Polymorphism
Genetic Polymorphisms
Polymorphism (Genetics)
NLM Classification #
QU 477
Previous Indexing
Genetics (1966-1967)
Genetics, Population (1966-1967)
Public MeSH Note
2005; see POLYMORPHISM (GENETICS) 1968-2004
History Note
2005(1968)
Date Introduced
1968/01/01
Last Updated
2020/02/06
Polymorphism, Genetic Preferred
page delivered in 0.131s