Genetic drift in mendelian population takes place in :-

Options

A. Small population
B. Large population
C. Oceanic population
D. Never occurs

Answer

**Step-by-Step Solution:**

1. **Understanding Genetic Drift:**
- Genetic drift refers to the change in the frequency of alleles (gene variants) in a population due to random sampling of organisms. It is a mechanism of evolution that can lead to significant changes in a population's genetic makeup over time.

2. **Identifying Characteristics of Genetic Drift:**
- Genetic drift is particularly pronounced in small populations. In larger populations, the effects of genetic drift are minimized because the larger number of individuals tends to buffer against random changes in allele frequencies.

3. **Factors Affecting Genetic Drift:**
- Several factors can influence genetic drift, including:
- **Mutation:** Changes in DNA that can introduce new alleles.
- **Recombination:** The shuffling of alleles during reproduction.
- **Gene Flow:** The transfer of alleles between populations.
- **Natural Selection:** The process where certain traits become more or less common due to their impact on survival and reproduction.

4. **Evaluating the Options:**
- The question asks where genetic drift occurs in Mendelian populations. Given the understanding that genetic drift is more significant in small populations due to sampling errors, we can conclude that the correct answer will reflect this characteristic.

5. **Conclusion:**
- Based on the analysis, genetic drift takes place in small populations. Therefore, the correct answer to the question is **Option A: Small Population**.

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