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In diploid organisms (those with two copies of each gene carried on separate chromosomes), one of the copies of a given gene may differ from the other copy of the same gene on the twin chromosome. In some cases one version of the gene (the dominant allele) has the effect of 'masking' the activity of the other (the recessive allele); that is, the presence of the dominant allele negates the effect of the recessive allele on the organism's phenotype. There are many mechanisms which can cause this phenomena, and it depends on the particular genes involved, but a simple model is one where the recessive allele is a biochemically inactive version of the dominant allele. In this case the dominant allele would mask the effect of the recessive allele by providing an active version of the gene. The dominant phenotype would be the one which shows the downstream effects of this activity, and the recessive phenotype one which shows the downstream effects of a lack of activity. The dominant allele is said to 'mask' the recessive allele because only one copy is required to result in an elimination of the recessive phenotype, whereas all copies of the gene must be the recessive allele to result in the recessive phenotype.
Wiki User
∙ 15y ago
Wiki User
∙ 10y agoA recessive allele shows only if the the individual has two copies of the recessive allele. As brown eyes are dominant over blue eyes, for blue eyes to show there would need to be two copies of the recessive allele.
A dominant allele shows even if the individual has only one copy of the allele. Again, the allele for brown eyes is dominant so brown eyes are dominant over blue eyes, therefore the dominant allele always masks the recessive allele.
Wiki User
∙ 13y agoYes
However you would be a carrier (if the recessive gene is the faulty one)
Your genes would be hetrozygous
Wiki User
∙ 14y agoum, they mask it? I'm pretty good at genetics but I'm not sure what you're trying to ask here.
Wiki User
∙ 10y agoYes, recessive allele is masked by the dominant allele.
Wiki User
∙ 12y agoDominant alleles override recessive alleles, but do not eliminate them. The recessive alleles can reoccur in future generations despite both parents having dominant alleles.
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When the dominant allele does not completely mask the effect of the recessive allele in the heterozygote it is called polygenic dominance incomplete dominance dominance corecessive codominance?
Incomplete dominance.
When on e allele of a gene masks the presence of the other allele what form is masked?
The recessive allele.
What gene is defined as a gene that controls the appearance of a certain trait?
the dominant allele
What is a dominent allele?
A dominant allele is an allele that can take over a recessive allele, so if you have a dominant allele and a recessive allele, then the offspring will most likely have a dominant allele over a recessive allele. The dominant allele is expressed over the recessive allele.
How is a recessive alle different from a dominant allele?
its different because adominant allele is in charge
When one allele of a gene mask the presence of the allele what form is masked?
Dominant
Is a situation in which a dominant allele completely masks a recessive allele for a gene.?
If you have 2 dominant alleles, the gene will be dominant, if you have 2 recessive alleles, the gene will be recessive. But if you have 1 recessive and 1 dominant, the Dominant allele will mask the recessive one.
What is the name of the gene pair that consist of a dominant allele and recessive allele?
The name of the gene pair that consists of a dominant and recessive allele, i.e. (Xx) will be a heterozygous allele. In this situation, the characteristics of the dominant characteristic will mask that of the recessive allele. People have have a heterozygous genotype may be carriers for diseases that reside on the recessive allele.
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
What type of allele masks the expression of the recessive allele and is therefore expressed in the heterozygous?
A dominant allele will mask the prsence of a recssive allele
What does The presence of an allele for purple flowers will mask the presence of an allele for white flowers mean?
Gene responsible for purple color is dominant over white color.
When the dominant allele does not completely mask the effect of the recessive allele in the heterozygote it is called polygenic dominance incomplete dominance dominance corecessive codominance?
Incomplete dominance.
When an allele mask the presence of another allele it is said to be?
Dominent. Simple- you have two types of Alleles, Dominent and Reccessive. Imagine a punnet square for the allele that causes albinoism (A). One parent has Aa, or one dominent allele and one reccessive allele for the trait. If the dominent skin-tone gene wasn't there (A), then it would be AA and he would be an albino. But since he has a dominent allele, he has normal color. If he made a baby with another Aa combination, they would have 25% chance of having an AA baby with no reccessive allele, a 50% chance of having an identical Aa combination, and a 25% chance of having an albino baby, AA.
When on e allele of a gene masks the presence of the other allele what form is masked?
The recessive allele.
What is allele masked by the dominant allele?
The Allele That Is Covered By The Dominant Allele Is The Recessive Allele.
What is caused by a dominant allele located on an autosome?
The dominant allele will cause the appearance of the phenotype that this dominant allele represents...
What gene is defined as a gene that controls the appearance of a certain trait?
the dominant allele
