| I: | Linked genes are always found on different chromosomes. | 
| II: | Recombination between linked genes does not occur. | 
| Assertion (A): | The strength of linkage between two genes is directly proportional to the distance between them on the chromosome. | 
| Reason (R): | Genes that are farther apart are less likely to be separated by recombination. | 
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). | 
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). | 
| 3. | (A) is True but (R) is False. | 
| 4. | (A) is False, (R) is False. |