SCIENCE
GENETIC AND MENDELS LAW OF HEREDITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The gene which masks the effect of non-allelic gene
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An undesirable defective gene
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The gene which fails to express itself in the presence of non allelic genes
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All of above
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Detailed explanation-1: -Some genes mask the expression of other genes just as a fully dominant allele masks the expression of its recessive counterpart. A gene that masks the phenotypic effect of another gene is called an epistatic gene; the gene it subordinates is the hypostatic gene.
Detailed explanation-2: -Epistasis is a circumstance where the expression of one gene is modified (e.g., masked, inhibited or suppressed) by the expression of one or more other genes.
Detailed explanation-3: -Epistasis is the non-allelic gene interaction where the presence of one gene masks the expression of another gene; dihybrid ratio for dominant epistasis becomes 12:3:1.
Detailed explanation-4: -One such relationship is epistasis, which is the interaction of non-allelic genes where the effect of one gene is masked by another gene to result either in the suppression of the effect or they both combine to produce a new trait (character).
Detailed explanation-5: -Epistasis is a phenomenon in genetics in which the effect of a gene mutation is dependent on the presence or absence of mutations in one or more other genes, respectively termed modifier genes. In other words, the effect of the mutation is dependent on the genetic background in which it appears.