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...

Genetics – Lesson Outline & Worksheets
Genetics – Lesson Outline & Worksheets

  Topics Modules Quizzes/Worksheets Description Introduction to Genetics Genetics – Definition: Heredity and ..

Plant meristem
Plant Meristems and Growth

In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells ..

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..

An artistic depiction of Dunkleosteus fish
Fish

The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..

Direct and indirect physiologic effects of growth hormone
Animal Growth Hormones

Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most impor..

Biological Cell Defense
Biological Cell Defense

Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..

Related Articles...

No related articles found

See all Related Topics