Dominance: Difference between revisions
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There are three types of dominance: | There are three types of dominance: | ||
Complete Dominance - recessive phenotypes are only present in homozygous recessive organisms | #[[Complete Dominance|Complete Dominance]] - recessive phenotypes are only present in homozygous recessive [[Organism|organisms]] | ||
#[[Incomplete Dominance|Incomplete Dominance]] - heterozygotes resemble neither the dominant nor the recessive phenotype | |||
Incomplete Dominance - heterozygotes resemble neither the dominant nor the recessive phenotype | #[[Co-dominance|Co-dominance]] - heterozygotes are a mixture of both the [[dominant|dominant]] and [[recessive|recessive]] phenotypes<ref>Hartl and Jones. (2009), Genetics: analysis of genes and genomes, 7th Edition, Jones and Bartlet</ref><br> | ||
Co-dominance - heterozygotes are a mixture of both the dominant and recessive phenotypes<ref>Hartl and Jones. (2009), Genetics: analysis of genes and genomes, 7th Edition, Jones and Bartlet</ref> | |||
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=== References === | === References === | ||
Revision as of 18:16, 17 November 2011
A genetic term used when describing an allele whose phenotype is expressed in organisms both homozygous for that allele and heterozygous (it masks another allele - a recessive allele).
There are three types of dominance:
- Complete Dominance - recessive phenotypes are only present in homozygous recessive organisms
- Incomplete Dominance - heterozygotes resemble neither the dominant nor the recessive phenotype
- Co-dominance - heterozygotes are a mixture of both the dominant and recessive phenotypes[1]
References
- ↑ Hartl and Jones. (2009), Genetics: analysis of genes and genomes, 7th Edition, Jones and Bartlet