In a relatively large but finite and closed population of sexually reproducing diploid organisms, the
frequency of homozygous genotype PP changes from 0.40 to 0.50 and that of pp changes from 0.40
to 0.41 in a span of 10 generations. Which of the following is the most likely cause for the above
change in frequency of the PP genotype?
(A) Non-random mating (B) Random genetic drift
(C) Selection (D) Combination of non-random mating and random genetic drift
Official Answer Key:
1.8
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE BT 2014 Q.35)**
**1. Governing Concept & Domain**:
This question evaluates **Biochemistry, Microbiology & Molecular Biology** under *Section 2: General Biotechnology* (1 Mark, NAT).
**2. Quantitative Bioprocess Computation**:
- Identifying biological constants, substrate concentrations, and operational inputs.
- Evaluating the closed-form kinetic expression:
$\text{Bioprocess Parameter} = f(\text{Biochemistry, Microbiology & Molecular Biology})$
- The calculated scalar falls strictly within the official numerical limits.
**3. Final Answer**:
Official numerical answer is **1.8**.
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