What is the definition of epistasis? A. When the allele of one gene masks the phenotype of another gene B. When the allele of one gene changes the phenotype of another gene C. When the allele of one gene changes the genotype of another gene D. When the allele of one gene masks the genotype of another gene.

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brennapop brennapop · Answer 1 · 2020-09-02T23:48:47+02:00

A When allele of one gene masks the phenotype of another gene

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pristina pristina · Answer 2 · 2021-10-21T14:11:25+02:00

Epistasis refers to non-allelic gene interaction where one gene masks the expression of another gene at distinct locus.

The gene that masks the expression of another non-allelic gene is epistatic to that gene and the gene that is suppressed is hypostatic.

So, the correct answer is option A. When the allele of one gene masks the phenotype of another gene B

other options-

B. When the allele of one gene changes the phenotype of another gene - incorrect ( one gene masks the phenotype of another gene)

C. When the allele of one gene changes the genotype of another gene - incorrect ( one gene masks the phenotype of another gene )

D. When the allele of one gene masks the genotype of another gene - incorrect ( one gene masks the phenotype and not the genotype of another gene)

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