What does supergene mean?
A supergene is a group of genes inherited together as a single functional unit. The genes are usually close together on the same chromosome, and a structural change such as an inversion can suppress recombination between them, allowing them to be transmitted as an intact group. This arrangement is especially important in evolutionary biology because it can coordinate several genes that together produce a complex phenotype. A well-known example involves genes controlling wing color and pattern in certain butterflies: the different mimetic forms of these butterflies are often associated with different supergenes. In this sense, the word is not simply a synonym for “a cluster of genes”; it specifically refers to linked genes whose inheritance and regulation can be treated as unified. The term is uncommon outside specialist genetics and evolutionary-biology literature.
nounA group of genes that are inherited together as a functional unit because they are closely linked on the same chromosome. Supergenes often control a complex trait, such as the color pattern of certain butterflies.
- A group of closely linked genes that are inherited and regulated together as a unit, often because chromosome inversion or another structural change suppresses recombination between them.
"An inversion on the chromosome kept the butterfly's color-pattern genes together, allowing them to behave as a supergene."
"The researchers identified a supergene controlling mimicry in the butterfly population."
"Chromosome inversion preserved linkage among the alleles and produced a balanced supergene."
The plural is used when referring to multiple distinct linked gene groups or examples found in different species or populations.
"Different supergenes have been identified in populations of the same butterfly species."
A supergene turns a cluster of tightly linked genes into what evolution can handle like a single genetic lever.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does supergene come from?
“Supergene” combines the Latin prefix super-, meaning “above” or “beyond,” with the scientific term gene. The latter comes through Latin from Greek genē, meaning “origin,” “kind,” or “race.” In genetics, the compound was developed to describe a group of neighboring genes inherited and regulated together as a functional unit.
Related word forms
How supergene is actually used
This is primarily a technical term in genetics and evolutionary biology. It is not a synonym for an ordinary collection of genes; it specifically emphasizes close linkage and coordinated inheritance.
Easily confused with supergene
A gene is a DNA sequence associated with a function or inherited trait, whereas a supergene is a group of neighboring genes that are inherited together.