Home Forum Dictionary Articles Tutorials Books Directory Share your work


Edit page | Page history | Printable version

Dictionary » C » Codominance

Codominance

Definition

noun

A condition in which the alleles of a gene pair in a heterozygote are fully expressed thereby resulting in offspring with a phenotype that is neither dominant nor recessive.


Supplement

A typical example showing codominance is the ABO blood group system. For instance, a person having A allele and B allele will have a blood type AB because both the A and B alleles are codominant with each other.


Compare: complete dominance, incomplete dominance.
See also: allele.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Genetics Problems... Friends i need ur help

... have to make some hypotheses on the underlying genotype giving rise to the observed phenotype: - type of transmission (i.e. recessive/dominant or codominance) - gene linkage (i.e. are they on the same chromosome or not) and calculate the distribution of phenotype in each case (just like above, ...

See entire post
by canalon
Thu Jul 16, 2009 2:03 am
 
Forum: Genetics
Topic: Genetics Problems... Friends i need ur help
Replies: 5
Views: 227

I would like to ask you about genetic question.

I think you're missing information. The parents are both recessive for at least one set of alleles, which means there'd have to be codominance or something...

See entire post
by plasmodesmata11
Sun Mar 15, 2009 1:15 pm
 
Forum: Genetics
Topic: I would like to ask you about genetic question.
Replies: 2
Views: 505

Dominant and Recessive alleles

I have an exam on wednesday about genes, punnett squares, gene maps, etc. I have trouble understanding Independent Assorment, Incomplete Dominance, Codominance, Multiple Alleles, and Polygenic traits. Also, for punnett squares, I'm still not clear on genotypic ratios and phenotypic ratios. What ...

See entire post
by Sora
Sun Feb 10, 2008 8:22 pm
 
Forum: Genetics
Topic: Dominant and Recessive alleles
Replies: 11
Views: 3684

hair color

Well some characteristics have more than one dominant allele, this is known as codominance. http://en.wikipedia.org/wiki/Codominance#Codominance I'm sure one of the mods will have a better explanation than this.

See entire post
by Draco
Fri Jan 04, 2008 8:21 am
 
Forum: Human Biology
Topic: hair color
Replies: 4
Views: 909

Having trouble with applying the Hardy-Weinberg Principle

... q) came from the observed genotypes! I'm new to all of this Hardy-Weinberg business, so I'm probably missing some crucial bit of information. Does codominance alter the results? It seems like it should, but I can't see how it would since it would only affect phenotypes (giving 3 possible phenotypes ...

See entire post
by jaddison
Sun Sep 16, 2007 7:01 pm
 
Forum: Genetics
Topic: Having trouble with applying the Hardy-Weinberg Principle
Replies: 1
Views: 596
View all matching forum results

This page was last modified 11:08, 20 June 2008. This page has been accessed 13,292 times. 
What links here | Related changes | Permanent link