Chromosomal theory of inheritance was pro posed by

Options

A. Morgan et al
B. Hugo de Vries
C. Both Sutton (1902) and Boveri (1902)
D. Waldeyer

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks who proposed the chromosomal theory of inheritance. This theory is fundamental in genetics and relates to how traits are passed from parents to offspring.

2. **Identifying the Options**: The options given are:
- A) Morgan et al
- B) Hougoudi Prize
- C) Both Saturn and Bobri
- D) Waldia

3. **Analyzing Each Option**:
- **Morgan et al**: While Morgan contributed significantly to genetics, particularly with his work on fruit flies (Drosophila), he did not propose the chromosomal theory of inheritance.
- **Hougoudi Prize**: This option is misleading as Hougoudi is known for his mutation theory, not for the chromosomal theory.
- **Both Saturn and Bobri**: This is the correct answer. They proposed the chromosomal theory of inheritance in 1902, stating that chromosomes are the vehicles of hereditary information.
- **Waldia**: This option is also incorrect as Waldia did not propose the chromosomal theory.

4. **Conclusion**: The correct answer is C) Both Saturn and Bobri, who proposed the chromosomal theory of inheritance in 1902.

5. **Summary of the Chromosomal Theory**: The chromosomal theory states that:
- Chromosomes are the carriers of genetic information (hereditary information).
- They contain Mendelian factors (genes).
- Chromosomes segregate and assort independently during the transmission of traits from one generation to the next.