Principles Of Inheritance And Variation Ques 15
In a genetic cross having recessive epistasis, $F_2$ phenotypic ratio would be 9:3:4
(a) $9: 6: 1$
(b) $15: 1$
(c) $9: 3: 4$
(d) $12: 3: 1$
Show Answer
Answer : c
Hints & Solution
(c) In recessive epistasis, the recessive alleles suppress the expression of a trait. Recessive epistasis is a type of intergenic interaction in which one non-allelic gene can produce its effect independently in the dominant state, but the second gene can produce its effect when they are present together. Here, homozygous recessive allele for a gene masks the expression of dominant allele of another gene.
BETA
