Co-dominance.
Incomplete Dominance. :]
Incomplete Dominance
It is called incomplete dominance.
When both the alleles are expressed, it is called co-dominance or mixed dominance.
As traits are dispensed to the offspring they can be either dominant or recessive. A recessive trait is only expressed when two identical alleles exist.
It depends on what you mean by "both are expressed". In order for both alleles to be expressed, both alleles must be dominant alleles. If one allele is recessive, it will be masked. If you are talking about alleles that are co-dominant, then both alleles would be expressed together. Ex: Red x white = red and white flower If you are talking about incomplete dominance, then both alleles are seen as a blend of both in the offspring. Ex: red x white = pink flower If you are talking about multiple alleles (like in human blood typing), then you can see 2 alleles expressed together. Ex: Type A x Type B can produce AB blood type.
This is called Codominance because both genes are expressed in an offspring.
Incomplete Dominance
It is called incomplete dominance.
That depends on the extent to which the allele is expressed. There are two cases. in the first case, if the phenotype ratio of one is greater than the other, that is, if one of them is expressed to a greater extent then the other, then it is known as incomplete dominance. However, if both are expressed in equal amounts in the offspring or there phenotype ratio is equal, then it is co-dominance.
When both the alleles are expressed, it is called co-dominance or mixed dominance.
Recessive because...
As traits are dispensed to the offspring they can be either dominant or recessive. A recessive trait is only expressed when two identical alleles exist.
Both of the alleles must be recessive. The trait expressed is a recessive trait.
It depends on what you mean by "both are expressed". In order for both alleles to be expressed, both alleles must be dominant alleles. If one allele is recessive, it will be masked. If you are talking about alleles that are co-dominant, then both alleles would be expressed together. Ex: Red x white = red and white flower If you are talking about incomplete dominance, then both alleles are seen as a blend of both in the offspring. Ex: red x white = pink flower If you are talking about multiple alleles (like in human blood typing), then you can see 2 alleles expressed together. Ex: Type A x Type B can produce AB blood type.
both alleles are expressed in the offsping
Incomplete Dominance
Codominance means that neither allele can mask the expression of the other allele. An example in humans would be the ABO blood group, where alleles A and alleles B are both expressed.