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A harmful recessive allele remains in the population because both homozygous dominant and heterozygous genotypes produce the dominant, healthy phenotype. So the heterozygous genotype keeps the harmful recessive allele in the population.

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13y ago

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What is an fixed allele APEX?

an allele present in all members of a population- APEX


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.


Which is the dominant allele?

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


Why will a recessive allele not show up if?

A recessive allele will not show up if there is a dominant allele present.


What type of allele is masked when a dominant allele is present?

The recessive allele is masked when a dominant allele is present. Dominant alleles are expressed over recessive alleles in heterozygous individuals.


Allele that is always expressed if present?

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


Capacity of one allele to suppress the expression?

A dominant allele will express itself if present, and will suppress the recessive allele's expression.


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 the 2 alleles are that control a specific characteristic?

The two alleles that control a specific characteristic are typically referred to as the dominant allele and the recessive allele. The dominant allele is expressed in the phenotype when present with a recessive allele, while the recessive allele is only expressed when two copies are present.


What happens to the recessive allele in a heterozygous offspring?

In a heterozygous offspring, the recessive allele is present but not expressed because the dominant allele masks its effects.


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 allele fixation?

An allele present in all members of a population