0
Epistasisrefers to genetic interactions in which the mutation of one gene masks the phenotypic effects of a mutation at another locus.Answers.comSystematic analysis of these epistatic interactions can provide insight into the structure and function of genetic pathways. By examining the phenotypes resulting from pairs of mutations we begin to understand how the function of these genes intersects. Genetic interactions are generally classified as either Positive/Alleviating or Negative/Aggravating. In the case of a positive epistatic interaction, the double mutant exhibits a phenotype which is neutral or improved relative to the phenotype of a single mutant Answers.com. This phenotypic response occurs when both genes lie within the same pathway. Conversely, negative interactions are characterized by an even stronger defect than would be expected in the case of two single mutations, and in the most extreme cases (synthetic sick/lethal) the double mutation is lethal. This aggravated phenotype arises when genes in compensatory pathways are both knocked out. High-throughput methods of analyzing these types of interactions have been useful in expanding our knowledge of genetic interactions. Synthetic genetic arrays (SGA), diploid based synthetic lethality analysis on microarrays (dSLAM), and epistatic miniarray profiles (E-MAP) are three important methods which have been developed for the systematic analysis and mapping of genetic interactions. This systematic approach to studying epistasis on a genome wide scale has significant implications for Functional_genomics. By identifying the negative and positive interactions between an unknown gene and a set genes within a known pathway, these methods can elucidate the function of previously uncharacterized genes within the context of a metabolic or developmental pathway.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoA recessive gene, recessive genes will not be expressed if they are masked by a dominant gene. Ex. having blonde hair is a recessive trait meaning if a person has a gene for blonde hair and a gene for brown hair, the person will have brown hair
Wiki User
∙ 11y agoGene interaction where one gene interfers with the expression of another gene is know as epistasis.
Wiki User
∙ 12y agoit is the dominant allele (the phenotype is the characteristic shown)
JSP
A gene that masks the phenotypic effect of another gene is called an epistatic gene; the gene it subordinates is the hypostatic gene.
Wiki User
∙ 15y agoA dominant gene masks a recessive gene.
Wiki User
∙ 14y agoEpistatic gene
Wiki User
∙ 13y agoRecessive, I think
Wiki User
∙ 13y agodominant
Add your answer:
Earn +20 pts
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 is when neither copy of an allele completely masks expression of the other but instead a blending of alleles is seen?
dominance :) i think its dominance.
What is an allele that always shows up in an organism's phenotype called - an allele that masks the other allele?
The dominant allele.
Allele that prevents the expression of a recessive allele?
A dominant 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
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 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 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.
What is the name given to an allele that masks another?
A dominant one
What type of allele masks the expression of the recessive allele?
Two recessive alleles can not take over a dominant allele because there are only two alleles in a pair. This can only happen if there is a mutation because the dominant always takes over the recessive.
When on e allele of a gene masks the presence of the other allele what form is masked?
The recessive allele.
Why are heterozygus individuals called carriers for non-sex-linked and X-linked recessive patterns of inheritance?
Aa. This is the heterozygous condition. Two alleles, one of which is dominant and masks the expression ( to varying degrees ) of the other allele. 'A' dominant and 'a' recessive. So, if the trait in question is the recessive allele the dominant allele masks its expression and the organism is a ' carrier ' of the trait and can pass it on to progeny.
What is expressed when neither copy of an allele completely masks expression of the other but instead a bending of alleles is seen?
incomplete dominance
What is it called when neither copy of an allele completely masks expression of the other but instead a blending of alleles is seen?
i think its codominance
