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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.
What else can I help you with?
What is the genotype for a brown eyed homozygote?
The genotype for a brown-eyed homozygote would be BB, where each allele represents the gene for brown eye color.
Does recessive allele is expressed if there is no dominant allele present?
Yes, a recessive allele will be expressed if there is no dominant allele present in the genotype. This is because in the absence of a dominant allele, the recessive allele has the opportunity to be expressed in the phenotype.
Does a recessive allele need another recessive allele to be expressed?
Yes, a recessive allele needs to be paired with another recessive allele in order to be expressed. This is because recessive alleles are only expressed when an individual has two copies of the recessive allele, one from each parent. If an individual has one dominant allele and one recessive allele for a particular trait, the dominant allele will be expressed.
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.
What is the genotype for a brown eyed homozygote?
The genotype for a brown-eyed homozygote would be BB, where each allele represents the gene for brown eye color.
What allele is expressed in a heterozygote?
The allele not expressed is referred to as a recessiveallele.
Does recessive allele is expressed if there is no dominant allele present?
Yes, a recessive allele will be expressed if there is no dominant allele present in the genotype. This is because in the absence of a dominant allele, the recessive allele has the opportunity to be expressed in the phenotype.
Does a recessive allele need another recessive allele to be expressed?
Yes, a recessive allele needs to be paired with another recessive allele in order to be expressed. This is because recessive alleles are only expressed when an individual has two copies of the recessive allele, one from each parent. If an individual has one dominant allele and one recessive allele for a particular trait, the dominant allele will be expressed.
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.
Allele that is always expressed if present?
An allele that is always expressed when it is present is the dominant 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 an expressed allele in a heterozygote?
Dominant allele as opposed to recessive allele.
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.
What does a dominant allele does this to another allele?
A dominant allele will mask the expression of a recessive allele when they are present together in an organism. The dominant allele will be expressed, while the recessive allele will not be visibly expressed in the organism's phenotype.
What is the difference between an inactive allele and an expressed allele?
An expressed allele is actively used to produce a specific protein or trait in an organism, while an inactive allele is not being actively used or expressed due to various factors such as mutations or epigenetic modifications. Inactive alleles may still be present in an individual's genetic makeup but are not contributing to the phenotype.
Allele that is fully expressed is referred to as?
No, it is referred to as dominant
