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Q. No.Consider the given two statements:
| 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. |
Subtopic: Â Linkage |
 61%
Level 2: 60%+
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Which of the following best explains a frequency of recombination of 50% in a dihybrid test cross?
| 1. | The two genes are likely to be located on different chromosomes. |
| 2. | All of the offspring have combinations of traits that match one of the two parents. |
| 3. | The genes are located on sex chromosomes. |
| 4. | Abnormal meiosis has occurred. |
Subtopic: Â Linkage |Â Recombination Gene Mapping |Â Recombination & Gene Mapping |
 59%
Level 3: 35%-60%
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The unit for measurement of the distance between two linked genes on a chromosome is:
1. Centimorgans
2. Base pairs
3. Micrometers
4. Angstroms
1. Centimorgans
2. Base pairs
3. Micrometers
4. Angstroms
Subtopic: Â Chromosomal Basis of Inheritance: Further Considerations |Â Linkage |
 79%
Level 2: 60%+
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