Find out the mismatched pair

Options

A. Lyonization-Russel and Lyon
B. Y-chromosomes-Stevens and Wilson
C. X-body-Henking
D. Shot gun sequencing -Jeffreys.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:** The question asks us to identify the mismatched pair from the given options related to genetic concepts and their discoverers.

2. **Analyzing Each Option:**
- **Option A:** Lionization proposed by Russell and Lyon.
- **Explanation:** Lionization, also known as dosage compensation, is indeed associated with the work of Russell and Lyon. This option is correct.

- **Option B:** Y chromosomes, proposed by Stevens and Wilson.
- **Explanation:** Stevens and Wilson are credited with the discovery of sex determination through chromosomes, including the identification of Y chromosomes. This option is also correct.

- **Option C:** X body discovered by Henking.
- **Explanation:** Henking did discover the X body in Hemiptera, which is related to the presence of sex chromosomes. This option is correct as well.

- **Option D:** Shotgun sequencing given by Jeffries.
- **Explanation:** This option is incorrect because Jeffries is known for developing the DNA fingerprinting technique, not shotgun sequencing. Shotgun sequencing is a method used in genomics, but it was not developed by Jeffries.

3. **Identifying the Mismatched Pair:** Based on the analysis, the mismatched pair is Option D, as it incorrectly attributes shotgun sequencing to Jeffries.

4. **Final Answer:** The mismatched pair is D (shotgun sequencing given by Jeffries).

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