Dictionary > Constitutive gene

Constitutive gene

Definition
noun, plural: constitutive genes
A gene that is transcribed at a relatively constant level regardless of the cell environmental conditions.
Supplement
Unlike facultative genes that are transcribed only when needed, constitutive genes are expressed continuously. It is because constitutive genes such as housekeeping genes code for products with housekeeping functions in cells, e.g. maintaining the basic cell processes or structure.
See also: constitutive enzyme, gene expression.


You will also like...

Growth and Plant Hormones
Growth and Plant Hormones

Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..

An artist depiction of a Precambrian multicellular life form.
The Evolution of Cell Organelles

The nucleus containing the genetic material, DNA, and the mitochondria, well-identified as the "powerhouse of the cell",..

Freshwater Ecology
Freshwater Ecology

Freshwater ecology focuses on the relations of aquatic organisms to their freshwater habitats. There are two forms of co..

Evolution of Life - Ancient Earth
Evolution of Life – Ancient Earth

Autotrophs flourished, absorbing carbon and light. Soon after, primitive life forms that could assimilate oxygen thrived..

Early Earth
The Origins of Life

This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..

Population Growth and Survivorship
Population Growth and Survivorship

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