Dictionary > Overhang


(molecular biology) Unpaired nucleotide(s) in the end of a DNA molecule, which may be produced by a staggered cut on the DNA using a restriction enzyme.
(dentistry) An excess of filling material projecting beyond the cavity margin or normal tooth contour.
To hang across or beyond; be suspended over.
In molecular biology, an overhang can be in either strand of a DNA molecule. Thus, a 3′ or 5′ overhang may be produced. An overhang may only be a single unpaired nucleotide in the end of DNA or a longer stretch of unpaired nucleotides like in cohesive end.
Related forms: overhangs (verb: simple present), overhanging (verb: present participle), overhung (verb: past, past participle).
Compare: blunt end (molecular biology).

See also: sticky end, restriction enzyme.

You will also like...

Population Regulation in an Ecosystem
Population Regulation in an Ecosystem

With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..

Birth Control and Contraception
Birth Control and Contraception

Different pregnancy and birth control and contraception strategies are described. Read this tutorial to learn each of th..

Genetic Mutations
Chromosome Mutations – II

This tutorial is a continuation of the first lesson on chromosomal mutation. Here, find out the chromosomal aberrations ..

Human Nervous System
The Human Nervous System

The nervous system is essentially a biological information highway. This tutorial gives an overview of the nervous syste..

Genetic engineering
Genetic Engineering Advantages & Disadvantages

This tutorial presents the benefits and the possible adverse eventualities of genetic engineering. Know more about this ..

Biosecurity and Biocontrol
Biosecurity and Biocontrol

This lesson explores the impact of biosecurity threats, and why they need to be identified and managed. Examples to incl..