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 with Drosophila, we need to analyze the given statements based on the results observed in the F2 generation. Let's break down the problem step by step.

### Step 1: Understand the Cross
Morgan hybridized yellow-bodied, white-eyed females (let's denote these traits as Y for yellow body and w for white eyes) with brown-bodied, red-eyed males (denote these traits as B for brown body and R for red eyes).

### Step 2: Analyze the F1 Generation
In the F1 generation, all offspring would typically show the dominant traits. Therefore, the F1 progeny would be brown-bodied and red-eyed (genotype: Yw/Bb/RR).

### Step 3: Examine the F2 Generation
When Morgan intercrossed the F1 progeny, he expected a typical Mendelian ratio of 9:3:3:1 for two independently assorting traits. However, he observed a significant deviation from this ratio.

### Step 4: Evaluate the Statements
(a) **F2 ratio was deviated very significantly from the 9:3:3:1 ratio**: This statement is correct because the expected ratio was not observed.

(b) **Both genes did not segregate independently of each other**: This statement is also correct. The deviation from the expected ratio suggests that the genes are linked and do not assort independently.

(c) **Recombinant types are not obtained in F2 generation**: This statement is incorrect. While the recombinant types may have been fewer, they were still present.

(d) **Both genes segregate independently of each other**: This statement is incorrect as the observed results indicate linkage.

### Conclusion
The correct set of statements based on the analysis is (a) and (b). Therefore, the answer is that statements (a) and (b) are correct.

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

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