Dictionary > Monogenic trait

Monogenic trait

Definition
noun
A trait produced by the effect of a gene or an allele
Supplement
A monogenic trait is a trait produced by the effect of a gene or an allele. It is in contrast to a polygenic trait that is controlled by a polygene (multiple genes). Since the trait is produced by a single gene or allele it is less complicated compared with the trait produced by a polygene. It also follows Mendelian inheritance and therefore conforms to the set of principles such as Law of Dominance. Accordingly, the two alleles of a heterozygous pair, the allele that is expressed is the dominant allele whereas the allele that is not expressed is the recessive allele.
A mutation involving a monogene may result in a so-called monogenic disorder. It is a condition wherein a single pair of genes or a single allele is causing the disorder or the disease. There are several types of monogenic disorders. An autosomal monogenic disorder is a type of disorder involving a single gene dysfunction in the autosome. It may be dominant or recessive depending on the type of allele involved. Another type of monogenic disorder is sex-linked, which involves either X or Y chromosome.
Compare:

See also:


You will also like...

Oligodendrocyte and Schwann cell
The Central Nervous System

Myelin sheath is essential for a faster conductivity of signals. Know more about this feature of some neurons in the Cen..

The process of photosynthesis
Photosynthesis – Photolysis and Carbon Fixation

Photosynthesis is the process that plants undertake to create organic materials from carbon dioxide and water, with the ..

Wart-like leaf galls on grape leaves
Plant Cell Defense

Plants protect themselves by releasing hydrogen peroxide to fight against fungal invasion. Another way is by secreting c..

Thermographic image of face and neck
Regulation of Organic Metabolism, Growth and Energy Balance

The human body is capable of regulating growth and energy balance through various feedback mechanisms. Get to know the e..

Freshwater lake ecosystem
Freshwater Producers and Consumers

Freshwater ecosystem is comprised of four major constituents, namely elements and compounds, plants, consumers, and deco..

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