Question

Match List I with List II and choose the correct answer.

• A. A-IV, B-III, C-I, D-II
• B. A-IV, B-II, C-I, D-III
• C. A-III, B-I, C-IV, D-II
• D. A-III, B-IV, C-I, D-II

Hint:

• Phytoene synthase → Golden rice
• EPSPS → Herbicide resistance
• Cry genes → Insect resistance
• Barnase-barstar → Hybrid seeds

Answer 1

The Correct Option is C

Concept: Different genes are used in genetically modified crops for specific traits:
• Phytoene synthase: Involved in beta-carotene synthesis → Golden rice
• Barnase-barstar system: Used for male sterility and hybrid seed production → Mustard hybrid
• EPSPS: Confers glyphosate resistance → RoundUp Ready crops
• CryIA(c): Bt toxin gene → insect resistance in Bt cotton

Step 1: Matching each item.

• A. Phytoene synthase → Golden rice → III
• B. Barnase-barstar system → DMH-11 mustard hybrid → I
• C. EPSPS → RoundUp Ready soybean → IV
• D. CryIA(c) → Bt cotton → II

Step 2: Writing the correct combination.
\[ A \rightarrow III,\quad B \rightarrow I,\quad C \rightarrow IV,\quad D \rightarrow II \] Thus, the correct option is (C).