Q757
The test cross ratio in complementary gene action is
A.
1 : 3
AnswerB.
1 : 2 : 3
C.
4 : 1
D.
2 : 1 : 1
Answer: Option A
Solution
Answer: Option A
Solution:
The test cross ratio in complementary gene action is 1 : 3.Complementary gene action is when two different genes work together to contribute to one single trait. These two genes are involved in a specific pathway, like a biochemical reaction, and produce functional products required to produce a certain trait.
The F2 ratio of complementary gene interaction is 9 : 7, whereas the test cross ratio is 1 : 3.