Mendel did not recognise phenomenon of linkage in his experiments because

Options

A. he did not have up powerful microspore.
B. he studied only pure plants.
C. there were many chromosomes to handle .
D. the studied characters were located on different chromosomes .

Answer

**Step-by-Step Solution:**

1. **Understanding Linkage**: Linkage refers to the tendency of genes that are located close to each other on the same chromosome to be inherited together. This means that they do not assort independently during meiosis.

2. **Mendel's Experiments**: Gregor Mendel conducted his experiments using pea plants and focused on specific traits such as flower color and seed shape. He analyzed these traits to understand inheritance patterns.

3. **Reason for Not Recognizing Linkage**: Mendel did not recognize the phenomenon of linkage in his experiments for several reasons:
- He primarily studied traits that were located on different chromosomes, which meant that they segregated independently according to Mendel's Law of Independent Assortment.
- The traits he selected for his experiments were not linked, as they were on separate chromosomes, leading to a 50% chance of recombination between them.

4. **Evaluating the Options**:
- **Option A**: "He did not have a powerful microscope." - This is incorrect because the recognition of linkage does not depend on the power of the microscope.
- **Option B**: "He studied only pure plants." - While Mendel did study pure plants, this does not relate to the phenomenon of linkage.
- **Option C**: "There were many chromosomes to handle." - Mendel worked with a limited number of traits and chromosomes, making this option incorrect.
- **Option D**: "The studied character was located on different chromosomes." - This is the correct answer because Mendel's traits were not linked due to their location on different chromosomes.

5. **Conclusion**: Therefore, the correct answer is **Option D**: "The studied character was located on different chromosomes."

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