Form of allele that is expressed even when present with a contrasting allele?

[Alex3355]

I stink at Biology

[NSK]

This would be co-dominance. The allele's for both traits are expressed equally, usually creating a sort of intermixing of the two traits. This is like type AB blood. It means that a person with type AB blood makes certain markers on their blood cells for both type A and type B blood and neither is truly dominant over the other

[kappakappagamma2010]

dominant alleles are expressed even when another (different) allele is present

[Chrysafides0101]

If the said allele is dominant to the allele at the same locus on the homologous chromosome, then the dominant allele will be expressed. Recessive alleles are only expressed when both are present at the same locus on both homologous chromosomes (homozygous recessive).However, co-dominance can allow two alleles to act dominantely, where both traits that they code for are expressed. Another form is incomplete dominance, where an intermediate form of the two traits blended together is expressed.

[asdfasdfa]

co-dominance: both alleles are expressedForgot name: both alleles are expressed, but they mix