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Q: When does one allele alter another allele?
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Is when one allele completely masks another?

when one allele is completely dominant over another allele, then it masks the expression of the second allele so the allele that masks the effect is called dominant allele and the allele whos effect is masked is called recessive allele


How are the bases in one allele different from the bases in another allele?

The bases in one allele is different from bases in another allele because an allele is different forms of the same gene. This means that even though they have been programed for the same thing there is a variation


What is a Reciessive form of an allele?

A recessive form of an allele is one that is only expressed in the presence of another recessive allele.


When one allele of a gene masks the presence of the allele what form can be seen in the phenotype?

When one allele for a particular trait masks or overrides another allele for a trait, it is called dominance. The allele that is masked is called the recessive allele. The allele that is dominant will determine the phenotype.


When one allele of a gene masks the presence of the other allele what form can seen in the phenotype?

When one allele for a particular trait masks or overrides another allele for a trait, it is called dominance. The allele that is masked is called the recessive allele. The allele that is dominant will determine the phenotype.


What one allele of a gene masks the presence of the other allele what form can be seen in the phenotype?

When one allele for a particular trait masks or overrides another allele for a trait, it is called dominance. The allele that is masked is called the recessive allele. The allele that is dominant will determine the phenotype.


When one allele shows dominance over another allele?

When one allele shows dominance over another it is masking the expression of the other allele which is called "recessive".The word for this is complete dominance.


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.


When allele of a gene masks the presence of the other allele what form can be seen in the phenotype?

When one allele for a particular trait masks or overrides another allele for a trait, it is called dominance. The allele that is masked is called the recessive allele. The allele that is dominant will determine the phenotype.


Gene interactions in which an allele at one locus prevents the expression of an allele at another locus is called?

This is called epistasis.


What is the name given to an allele that masks another?

A dominant one


What is it called in situations in which one allele for a gene is not completely dominant over another allele for that gene?

incomplete dominance