Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
Which of the following statements are true for complementary genes? (1) Both the genes interact to produce a complementary new trait (2) Pair of nonallelic genes (3) The F2 ratio is generally 9:7 (4) The F2 ratio is generally 9:3:4A) 1,2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: A
Solution :
In case of complementary genes, two genes (non-allelic) control same character but produce expression only when two dominant genes come together. In absence of any dominant gene, recessive phenotype (new trait) is produced. The phenotypic ratio in F2 generation is 9:7. eg, flower colour in Lathyrus odoratus (sweet pea).
You need to login to perform this action.
You will be redirected in
3 sec
