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A heterozygous individual has two different alleles. Depending on the type of dominance for the particular gene there are several different outcomes:
If one allele is completely dominant over the other then this will be expressed.
If they are codominant, then both will be expressed. The human blood type AB is an example of this - both A and B are expressed, neither is repressed by the other.
Another possibility is incomplete dominance - where the phenotype (characteristic) is a mix of both (a trait in-between). For example a snap-dragon with red and white alleles will be pink.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoWhen a person is heterozygous for a particular trait, in general the dominant trait is expressed. The classic example of this is pea plant height from Mendelev's experiments - a pea plant that received a T (tall, dominant) and t (short, recessive) combination would be a tall pea plant.
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∙ 14y agoDominant allele as opposed to recessive allele.
Wiki User
∙ 13y agoThe dominant allele
Wiki User
∙ 12y agoDominant allele .
Wiki User
∙ 11y agoDominant
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Does a recessive allele need another recessive allele to be expressed?
I think if an allele "want" to be expressed, then it has to have a dominant allele. They don't need another recessive allele.
What is the term for an allele that is not expressed in the phenotype of a heterozygous individual?
incomplete dominance source: PH Bio textbook
What is meant by complete dominance?
DefinitionnounA kind of dominance wherein the dominant allele completely masks the effect of the recessive allele in heterozygous condition.SupplementFor instance, an individual carrying two alleles that are both dominant(e.g. AA), the trait that they represent will be expressed. But if the individual carries two alleles in a manner that one is dominantand the other one is recessive, (e.g. Aa), the dominant allele will be expressed while the recessive allele will be suppressed. Hence, theheterozygote (Aa) will have the same phenotypeas that of the dominant homozygote (AA). This condition is called complete dominance.
Does recessive allele is expressed if there is no dominant allele present?
YES
What are the circumstances under which dominant alleles will be expressed?
A dominant allele will be expressed when an allele pair is homozygous or heterozygous dominant.
What allele is expressed in a heterozygote?
The allele not expressed is referred to as a recessiveallele.
What is the difference between an inactive allele and an expressed allele?
The inactive allele is invisible in an organism while an expressed allele is the dominant allele and therefor is the phenotype.
Does a recessive allele need another recessive allele to be expressed?
I think if an allele "want" to be expressed, then it has to have a dominant allele. They don't need another recessive allele.
Allele that is always expressed if present?
An allele that is always expressed when it is present is the dominant allele.
What is an expressed allele in a heterozygote?
Dominant allele as opposed to recessive allele.
What is another word for homozygous?
Having two copies of the same allele. An organism as such can be called homozygote Answer: It is also called a purebreed.
What is the term for an allele that is not expressed in the phenotype of a heterozygous individual?
incomplete dominance source: PH Bio textbook
What is meant by complete dominance?
DefinitionnounA kind of dominance wherein the dominant allele completely masks the effect of the recessive allele in heterozygous condition.SupplementFor instance, an individual carrying two alleles that are both dominant(e.g. AA), the trait that they represent will be expressed. But if the individual carries two alleles in a manner that one is dominantand the other one is recessive, (e.g. Aa), the dominant allele will be expressed while the recessive allele will be suppressed. Hence, theheterozygote (Aa) will have the same phenotypeas that of the dominant homozygote (AA). This condition is called complete dominance.
Does recessive allele is expressed if there is no dominant allele present?
YES
What are the circumstances under which dominant alleles will be expressed?
A dominant allele will be expressed when an allele pair is homozygous or heterozygous dominant.
Allele that is fully expressed is referred to as?
No, it is referred to as dominant
What in term of applied to the trait that is expressed irregardless of the second allele?
The term applied to the trait that is expressed in regardless of the second allele is dominant. In contrast, the term recessive refers to a trait that is expressed when the second allele is identical.
