Principle Of Inheritance And Variation Question 38
Question: Epistasis implies [AIIMS 1985]
Options:
A) One pair of genes can completely mask the expression of another pair of genes
B) One pair of genes independently controls a particular phenotype
C) One pair of genes enhances the phenotype expression of another pair of genes
D) Many genes collectively control a particular phenotype
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Answer:
Correct Answer: A
Solution:
Epistasis is the phenomenon of masking or supressing the expression of a gene by another non-allelic gene.
The gene which supresses the expression of a non-allelic gene is termed as epistatic gene and a gene whose expression is masked by a non-allelic gene is termed as hypostatic gene.
BETA
