Question

Green Fluorescent Protein was first observed in:

• A. Jellyfish
• B. Primate
• C. Cuttlefish
• D. Shark

Hint:

Green Fluorescent Protein (GFP):
Source organism → Jellyfish (\textit{Aequorea victoria})
Widely used as a reporter gene in molecular biology The discovery of GFP revolutionized biological imaging.

Answer 1

The Correct Option is A

Step 1: Recall the origin of Green Fluorescent Protein (GFP). Green Fluorescent Protein (GFP) was first discovered in the jellyfish \textit{Aequorea victoria}.
Step 2: Understand its biological role. In jellyfish, GFP:
absorbs blue light,
emits green fluorescence,
contributes to bioluminescence.
Step 3: Eliminate incorrect options.
Primate: GFP is not naturally found in primates.
Cuttlefish: Known for camouflage, not GFP.
Shark: Does not produce GFP.
Hence, the correct answer is \[ \boxed{\text{Jellyfish}} \]