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HomeHomework HelpbiologyCodominance in Genetics

Codominance in Genetics

Codominance is a genetic phenomenon where both alleles in a heterozygous individual are fully expressed, resulting in a phenotype that displays characteristics of both alleles simultaneously. This occurs without one allele being dominant over the other, leading to a distinct expression of traits.

intermediate
2 hours
Biology
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Overview

Codominance is a fascinating genetic principle where both alleles in a gene pair are expressed equally, resulting in a phenotype that showcases both traits distinctly. This concept is crucial in understanding how certain traits are inherited and expressed in various organisms, including humans. A cl...

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Key Terms

Allele
Different forms of a gene that can exist at a specific locus.

Example: The gene for flower color can have a red allele and a white allele.

Phenotype
The observable traits of an organism resulting from the interaction of its genotype with the environment.

Example: A plant's height or flower color.

Genotype
The genetic constitution of an individual, represented by the alleles it possesses.

Example: AA, Aa, or aa for a specific trait.

Dominant Trait
A trait that is expressed in the phenotype even when only one copy of the allele is present.

Example: Brown eyes are dominant over blue eyes.

Recessive Trait
A trait that is only expressed in the phenotype when two copies of the allele are present.

Example: Blue eyes require two recessive alleles.

Blood Type
Classification of blood based on the presence of specific antigens on the surface of red blood cells.

Example: Type AB blood has both A and B antigens.

Related Topics

Incomplete Dominance
A genetic scenario where the phenotype is a blend of two traits.
intermediate
Mendelian Genetics
The study of inheritance patterns established by Gregor Mendel.
intermediate
Polygenic Inheritance
A type of inheritance where multiple genes influence a trait.
advanced
Genetic Engineering
The manipulation of an organism's genes using biotechnology.
advanced

Key Concepts

allelesphenotypegenotypeinheritance patterns