Dictionary > Facultative gene

Facultative gene

Definition
noun, plural: facultative genes
(1) A gene transcribed only when needed or when a cell receives a signal from its surroundings.
(2) A gene whose expression is influenced by environmental factors.
Supplement
Unlike constitutive gene, a facultative gene is not transcribed continually but only when needed.
Compare: constitutive gene.

See also: gene expression.


You will also like...

Water Cycle
The Water Cycle

The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..

Regulation of Biological Systems
Regulation of Biological Systems

Regulation of Biological Systems tutorials are focused on the modulation of biological systems from cell to population l..

Population Growth and Survivorship
Population Growth and Survivorship

This lesson looks at population attributes, regulation, and growth. It also covers population genetics, particularly gen..

3D rendering of an antibody
Passive and Active Types of Immunity

Lymphocytes are a type of white blood cell capable of producing a specific immune response to unique antigens. In thi..

"Cronopio dentiacutus", a prehistoric mammal (an illustration)
Mammalian Ancestors

Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Ov..

Human Reproduction
Human Reproduction

Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..

Related Articles...

No related articles found

See all Related Topics