Difference Wiki

Dominance vs. Codominance: What's the Difference?

Edited by Huma Saeed || By Sawaira Riaz || Published on January 16, 2024
Dominance is when one allele masks the effect of another in a heterozygote, while codominance involves both alleles being fully expressed.

Key Differences

Dominance occurs in genetics when an allele effectively overshadows the expression of another allele, leading to a specific phenotype. Codominance, on the other hand, is a scenario where both alleles in a heterozygous combination are equally expressed, resulting in a phenotype that shows both traits distinctly.
Sawaira Riaz
Jan 16, 2024
In dominance, the dominant allele's trait is the only one observed in the organism's phenotype, while the recessive allele's influence is masked. Codominance differs as it allows both alleles to contribute to the phenotype, resulting in a mixed or blended manifestation of both traits.
Sawaira Riaz
Jan 16, 2024
An example of dominance is brown eyes over blue eyes in humans, where the allele for brown eyes masks the effect of the blue eye allele. In codominance, an example would be the AB blood type in humans, where both A and B alleles are equally expressed.
Huma Saeed
Jan 16, 2024
The concept of dominance is crucial in understanding Mendelian genetics and the inheritance of traits, whereas codominance provides insights into more complex genetic interactions and inheritance patterns.
Harlon Moss
Jan 16, 2024
Dominance simplifies the prediction of offspring traits, codominance offers a more nuanced view of genetics, showcasing the diversity and complexity of genetic expression.
Sawaira Riaz
Jan 16, 2024
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Comparison Chart

Expression in Phenotype

One allele masks the other
Both alleles equally expressed
Sawaira Riaz
Jan 16, 2024

Example in Humans

Brown eyes over blue eyes
AB blood type
Huma Saeed
Jan 16, 2024

Genetic Inheritance

Follows Mendelian patterns
More complex inheritance
Sawaira Riaz
Jan 16, 2024

Phenotypic Result

Single trait observed
Blend of both traits
Janet White
Jan 16, 2024

Significance

Simplifies trait prediction
Shows genetic diversity
Harlon Moss
Jan 16, 2024
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Dominance and Codominance Definitions

Dominance

Dominance is the genetic mechanism where one allele masks the expression of another.
In flower color, red is often dominant over white.
Sawaira Riaz
Dec 23, 2023

Codominance

Codominance is the genetic situation where two different traits are fully displayed.
In some flowers, red and white petals are codominantly expressed.
Harlon Moss
Dec 23, 2023

Dominance

Dominance pertains to the overshadowing effect one allele has in a gene pair.
In birds, the gene for long feathers is dominant over short feathers.
Aimie Carlson
Dec 23, 2023

Codominance

Codominance is when neither allele in a gene pair masks the other.
In certain fish species, both spotted and striped patterns are codominantly expressed.
Aimie Carlson
Dec 23, 2023

Dominance

Dominance is the prevalence of one allele's trait over another.
In pea plants, the allele for tall stems is dominant over short stems.
Sawaira Riaz
Dec 23, 2023

Codominance

Codominance pertains to the equal representation of two genetic traits.
In certain birds, black and white feather colors are codominantly expressed.
Aimie Carlson
Dec 23, 2023

Dominance

Dominance refers to the primary influence one genetic variant has over another.
In cats, the allele for black fur is dominant over the allele for white fur.
Sawaira Riaz
Dec 23, 2023

Codominance

Codominance refers to the simultaneous expression of both alleles in a heterozygote.
Human blood type AB exhibits codominance of A and B alleles.
Harlon Moss
Dec 23, 2023

Dominance

Dominance is the superior manifestation of one trait in heterozygous pairings.
In human hair texture, curly is dominant over straight.
Harlon Moss
Dec 23, 2023

Codominance

Codominance occurs when two alleles are equally expressed in an organism.
In cattle, red and white fur show codominance, resulting in roan coloring.
Huma Saeed
Dec 23, 2023

Dominance

The condition or fact of being dominant.
Sawaira Riaz
Dec 19, 2023

Codominance

A heterozygous condition in which both alleles at a gene locus are fully expressed in the phenotype.
Sawaira Riaz
Dec 19, 2023

Dominance

The state of being dominant; of prime importance; supremacy.
Sawaira Riaz
Dec 19, 2023

Codominance

(genetics) A condition in which both alleles of a gene pair in a heterozygote are fully expressed, with neither one being dominant or recessive to the other.
Sawaira Riaz
Dec 19, 2023

Dominance

Being in a position of power, authority or ascendancy over others.
Sawaira Riaz
Dec 19, 2023

Dominance

(physiology) The superior development of or preference for one side of the body or one of a pair of organs; such as being right-handed.
Sawaira Riaz
Dec 19, 2023

Dominance

The property of a gene such that it suppresses the expression of its allele.
Sawaira Riaz
Dec 19, 2023

Dominance

Predominance; ascendency; authority.
Sawaira Riaz
Dec 19, 2023

Dominance

Superior development of one side of the body
Sawaira Riaz
Dec 19, 2023

Dominance

The state that exists when one person or group has power over another;
Her apparent dominance of her husband was really her attempt to make him pay attention to her
Sawaira Riaz
Dec 19, 2023

Dominance

The power or right to give orders or make decisions;
He has the authority to issue warrants
Deputies are given authorization to make arrests
Sawaira Riaz
Dec 19, 2023

FAQs

What is dominance in genetics?

Dominance is when one allele's trait overrides another's in a heterozygote.
Sawaira Riaz
Jan 16, 2024

How does dominance affect inheritance?

It simplifies predicting traits, as dominant alleles are more likely to be expressed.
Sawaira Riaz
Jan 16, 2024

What is codominance?

Codominance occurs when both alleles in a heterozygote are fully expressed.
Sawaira Riaz
Jan 16, 2024

What's a common example of dominance?

Brown eyes being dominant over blue eyes in humans.
Sawaira Riaz
Jan 16, 2024

Can dominance be partial?

Yes, in incomplete dominance, traits blend rather than one completely masking the other.
Huma Saeed
Jan 16, 2024

Does dominance imply superiority?

No, it's purely about genetic expression, not trait quality.
Janet White
Jan 16, 2024

Can codominance occur in humans?

Yes, the AB blood type is a result of codominance.
Aimie Carlson
Jan 16, 2024

Is codominance common?

It's less common than dominance but occurs in many species.
Harlon Moss
Jan 16, 2024

How does codominance differ from dominance?

In codominance, both alleles contribute to the phenotype, unlike dominance where one allele overshadows the other.
Aimie Carlson
Jan 16, 2024

How do dominance and codominance affect genetic diversity?

Dominance can mask genetic variation, while codominance can reveal it.
Sawaira Riaz
Jan 16, 2024

Is codominance predictable like dominance?

It can be predictable, but the patterns are more complex.
Sawaira Riaz
Jan 16, 2024

Are dominance and codominance mutually exclusive?

Yes, a gene pair can exhibit either dominance or codominance, not both simultaneously.
Janet White
Jan 16, 2024

Can environment affect dominance and codominance?

Yes, environmental factors can influence the expression of genes.
Janet White
Jan 16, 2024

How do dominance and codominance relate to genetic disorders?

Both can play a role in the inheritance and expression of genetic disorders.
Sawaira Riaz
Jan 16, 2024

What are some examples of codominance in animals?

Roan fur in cattle and certain patterns in flowers.
Sawaira Riaz
Jan 16, 2024

Does dominance always mean one allele is more common?

No, dominance refers to expression, not frequency.
Sawaira Riaz
Jan 16, 2024

Can codominance occur in plant traits?

Yes, it's often seen in flower color and leaf patterns.
Aimie Carlson
Jan 16, 2024

Can codominance lead to new traits?

Yes, it can result in phenotypes that are a mix of both alleles.
Aimie Carlson
Jan 16, 2024

How do dominance and codominance play a role in evolution?

They contribute to genetic variation, which is essential for natural selection.
Janet White
Jan 16, 2024

Is it easier to study dominance or codominance in genetics?

Dominance is generally simpler to study due to more straightforward patterns.
Harlon Moss
Jan 16, 2024
About Author
Written by
Sawaira Riaz
Sawaira is a dedicated content editor at difference.wiki, where she meticulously refines articles to ensure clarity and accuracy. With a keen eye for detail, she upholds the site's commitment to delivering insightful and precise content.
Edited by
Huma Saeed
Huma is a renowned researcher acclaimed for her innovative work in Difference Wiki. Her dedication has led to key breakthroughs, establishing her prominence in academia. Her contributions continually inspire and guide her field.

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