Question

What is the right answer and why? And why are each of the wrong choices wrong? Please explain:

1.) A condition in which one gene pair masks the expression of a nonallelic gene pair is called:

- epistasis

-codominance

-dominance

-recessive

Answer 1

Epistasis

Epistasis is non allelic interaction between alleles at different gene loci. Alleles (epistatic) at one gene locus mask the effect of alleles at other gene locus (hypostatic).

Codominance is the type of inheritance in which two alleles are equally dominant over each other and heterozygotes show a variegated phenotype.

Dominance is the type of condition in which one allele is completely dominant over the other allele which is recessive.

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