The term chromonema was coined by

Options

A. Flemming
B. Strasburger
C. De Robertis
D. Vijdovsky.

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Chromonema":**
- The term "chromonema" refers to the structure that represents the core of chromatids during the early stages of condensation in cell division.

2. **Identifying the Scientist:**
- The question asks who coined the term "chromonema." We need to evaluate the options provided: Fleming, Strasburger, De Robertis, and Wyszowski.

3. **Analyzing Each Option:**
- **Fleming:** There are multiple scientists with the last name Fleming. One is known for discovering penicillin (Alexander Fleming), while another is associated with the study of mitosis. However, neither is credited with coining "chromonema."
- **Strasburger:** He is known for his work on mitosis in plant cells and fertilization in plants, but he did not coin the term "chromonema."
- **De Robertis:** He was an embryologist known for research on tissue differentiation, but he did not coin the term either.
- **Wyszowski:** This scientist is credited with coining the term "chromonema."

4. **Conclusion:**
- After analyzing all the options, the correct answer is Wyszowski, as he is the scientist who coined the term "chromonema."

**Final Answer: Wyszowski**

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