Who discovered X-chromosome during spermatogenesis in few insects and initially named it X body ?

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the scientist who discovered the X chromosome during spermatogenesis in certain insects and initially referred to it as the X body.

2. **Defining Spermatogenesis**: Spermatogenesis is the biological process through which sperm cells are formed in the male reproductive organs, specifically in the testes.

3. **Identifying the Scientist**: The scientist who made this discovery is Hermann Henking. He conducted his research in the year 1891.

4. **Henking's Discovery**: During his studies on spermatogenesis, Henking identified a specific nuclear structure that appeared in 50% of the sperm cells. He noted that this structure was absent in the other 50% of the sperm cells.

5. **Naming the Structure**: Henking initially named this specific nuclear structure the "X body" due to its distinct appearance.

6. **Further Research**: Subsequent research by Henking and other scientists revealed that this X body was, in fact, a chromosome, which is why it was later referred to as the X chromosome.

7. **Conclusion**: Therefore, the answer to the question is that Hermann Henking discovered the X chromosome during spermatogenesis and initially named it the X body.

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