Morgan hybridised yellow-bodied, white-eyed females to brown-bodied red-eyed males and intercrossed their `F_(1)` progeny. He observed that
(a) `F_(2)` ratio was deviated very significantly from the `9:3:3:1` ratio
(b) Both genes did not segregate independently of each other
(c) Recombinant types are not obtained in `F_(2)` generation
(d) Both genes segregate independently of each other
Select the correct set of statements :

Options

A. (a) & (b) only
B. (b) & (c ) only
C. (b) & (d) only
D. (c ) & (d) only

Answer

To solve the question regarding Morgan's hybridization experiment, we will analyze each statement provided and determine their validity based on the principles of inheritance.

### Step-by-Step Solution:

1. **Understanding the Cross**:
- Morgan hybridized yellow-bodied, white-eyed females (genotype YYWW) with brown-bodied, red-eyed males (genotype yyww). The F1 progeny would be heterozygous for both traits (YyWw).

2. **Intercrossing F1 Progeny**:
- When the F1 progeny (YyWw) are intercrossed, we expect to see a typical dihybrid ratio of 9:3:3:1 if the two genes assort independently.

3. **Analyzing the Statements**:
- **Statement (a)**: The F2 ratio was deviated very significantly from the 9:3:3:1 ratio.
- **True**: This is true because the genes are tightly linked, leading to a deviation from the expected ratio.

- **Statement (b)**: Both genes did not segregate independently of each other.
- **True**: This is also true as the genes are linked, meaning they do not assort independently.

- **Statement (c)**: Recombinant types are not obtained in F2 generation.
- **False**: This statement is false because recombinant types can occur, although they may be present in low frequencies (1.3% in this case).

- **Statement (d)**: Both genes segregate independently of each other.
- **False**: This statement is also false because, as established, the genes are linked and do not segregate independently.

4. **Conclusion**:
- The correct set of statements is (a) and (b). Therefore, the answer is that statements A and B are true.

### Final Answer:
The correct set of statements is: **(a) and (b)**.

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