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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.
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Allele that is always expressed if present?
An allele that is always expressed when it is present is the dominant allele.
Which form of gene pair is expressed when both dominant and recessive are present?
In a situation where both a dominant and recessive allele are present in a gene pair, the dominant allele will be expressed phenotypically. The presence of a dominant allele overrides the expression of the recessive allele.
What type of allele masks the expression of the recessive allele and is therefore expressed in the heterozygous?
A dominant allele masks the expression of a recessive allele and is therefore expressed when present in the heterozygous state.
True or False In heterozygous individuals only the recessive allele is expressed?
False. In heterozygous individuals, both the dominant and recessive alleles are present, but only the dominant allele determines the phenotype while the recessive allele remains masked.
Under what condition is a single recessive allele expressed in a male?
A single recessive allele will be expressed in a male if he inherits that allele on his only X chromosome, as males have one X and one Y chromosome. This is because the presence of the recessive allele on the X chromosome has no dominant allele to mask its expression.
What is the difference between a gene allele Chromosome and trait?
Alleles are alternate versions of genes that code for certain phenotypes, or traits. The traits of an individual are a result of the interaction between their genotype (alleles) and the environment.
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.
What is e difference between a dominate and recessive allele?
The answer is that The difference is that dominant dominates, and recessive is dominated.
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 difference between dominant and recessive alleles for specific traits?
Dominant is an allele that will always be expressed in a heterozygous individual. Recessive on other hand are traits that will only be expressed in a homozygous condition. Organisms receive one allele for each trait from each parent, thus you have two alleles for each trait.
What is the term for an allele that is not expressed in the phenotype of a heterozygous individual?
incomplete dominance source: PH Bio textbook
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.
The difference between a dominate and a recessive trait is?
A dominant trait is expressed when an individual has one or two copies of the dominant allele, while a recessive trait is only expressed when an individual has two copies of the recessive allele. Dominant traits mask the expression of recessive traits in heterozygous individuals.
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.
Which form of gene pair is expressed when both dominant and recessive are present?
In a situation where both a dominant and recessive allele are present in a gene pair, the dominant allele will be expressed phenotypically. The presence of a dominant allele overrides the expression of the recessive allele.
