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The dominant allele overpowers a recessive allele, therefore when the two are combined (heterozygous) the phenotype of the organism becomes whatever the dominant allele represents.

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Juliet Olson

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3y ago

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Allele that prevents the expression of a recessive allele?

A dominant allele


How do you use recessive allele in a sentence?

The building blocks of our genes (that make us what we are) are called alleles and these can be either dominant, recessive or codominant - which means they are equally dominant. Now for your sentence: "A typical example of codominance can be found in blood types, where the existence of A as well as B alleles in a person will lead to blood type AB".


What is allele masked by the dominant allele?

An allele that is masked by the dominant allele is called a recessive allele. When an individual has one dominant allele and one recessive allele, only the trait determined by the dominant allele will be expressed. The recessive allele will only be expressed if an individual has two copies of it (homozygous recessive).


When on e allele of a gene masks the presence of the other allele what form is masked?

The recessive allele.


In one allele is dominant to a recessive allele?

In a dominant-recessive allele relationship, the dominant allele will be expressed phenotypically over the recessive allele. This means that even if an organism carries one dominant and one recessive allele for a particular trait, the dominant allele will determine the observable characteristic.


Which is the dominant allele?

The dominant allele is the trait that shows up in the organism when the allele is present


Allele that is always expressed if present?

An allele that is always expressed when it is present is the dominant allele.


What is it Dominant allele What is a recessive allele?

A genotype in which there are both a dominant and a recessive allele is called heterozygous.


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 caused by a dominant allele located on an autosome?

A dominant allele located on an autosome will be expressed phenotypically in the individual, meaning it will be visible in the physical characteristics of the organism. This dominant allele will mask the effects of any recessive allele at the same locus.


Is a recessive allele different from a dominant allele?

Yes, a recessive allele is masked or overridden by a dominant allele in a heterozygous individual. This means that the dominant allele's trait will be expressed. In contrast, a recessive allele's trait will only be expressed if an individual has two copies of the recessive allele.


If and individual has one dominant allele and one recessive allele will the recessive allele show up?

No, the dominant allele will be expressed in the individual's phenotype, masking the presence of the recessive allele. The recessive allele will only be expressed if an individual inherits two copies of the recessive allele.