![Which of the following pairs is wrongly matched?](https://www.gkseries.com/blog/wp-content/uploads/2023/09/Which-of-the-following-pairs-is-wrongly-matched.jpg)
Which of the following pairs is wrongly matched?
Option 1 : T.H. Morgan : Linkage
Option 2 : Starch synthesis in pea : Multiple alleles
Option 3 : XO types sex determination : Grasshopper
Option 4 : ABO blood grouping : Co-dominance
Correct answer is option 2.