Question
Biology Question on Principles of Inheritance and Variation
Two nonallelic genes produces the new phenotype when present together but fail to do so independently then it is called
A
Epistasis
B
Polygene
C
Non complimentry gene
D
Complimentry gene
Answer
Complimentry gene
Explanation
Solution
When two non-allelic genes are jointly responsible for a novel phenotype but do not exhibit their individual effects independently, this phenomenon is referred to as complementary gene interaction. Complementary gene interaction occurs when two dominant non-inter-allelic genes, each exerting its own influence, combine to produce a distinct trait. This collaboration between the two genes alters the expected Mendelian ratio from 9:3:3:1 to 9:7, reflecting the combined impact of both genes. So, the correct option is (D): Complimentry gene