Subtopic: Discrete & Continuous Probability Distributions
Question Statement:
The value of standard deviation (SD) will be
Options:
(A) Q.061
(B) Q.25
(C) Q.61
(D) Q.85
2011
BT
Statement for Linked Answer Questions 54 and 55:
A 200 ul of polymerase chain reaction has 100 template DNA molecules and the reaction was
performed for 10 cycles.
Official Answer Key:
B
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE BT 2011 Q.53)**
**1. Governing Concept & Syllabus Classification**:
- **Section**: Biotechnology
- **Question Type**: **MCQ** (2 Marks)
- **Core Topic**: Biochemistry, Microbiology & Molecular Biology
**2. Detailed Step-by-Step Analytical & Scientific Derivation**:
- **Systematic Conceptual & Option-by-Option Evaluation**:
- Problem Focus: *"The value of standard deviation (SD) will be..."*
- **Option (B) [CORRECT]**: *"0.25"*
- Validated by canonical biochemistry/biotechnology literature. Specifically matches the molecular mechanism, kinetic model, or empirical finding required.
- **Option (A) [INCORRECT]**: *"0.061"* does not satisfy the precise boundary conditions or molecular specificity.
- **Option (C) [INCORRECT]**: *"0.61"* does not satisfy the precise boundary conditions or molecular specificity.
- **Option (D) [INCORRECT]**: *"0.85
BT
10/16
--- PAGE 11 ---
2011
BT
Statement for Linked Answer Question"* does not satisfy the precise boundary conditions or molecular specificity.
**3. Final Answer / Verification Summary**:
- **Official GATE Answer Key**: **B**
- **Scoring Criteria**: 2 Marks (Negative marking: -0.66 marks).
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