| At present, scientists can determine the arrangement or relative positions of genes or DNA sequences on a chromosome. How does this knowledge benefit us? |
| 1. It is possible to know the pedigree of livestock. |
| 2. It is possible to understand the causes of all human diseases. |
| 3. It is possible to develop disease resistant animal breeds. |
| Which of the statement(s) given above is/are correct? |
A) 1 and 2
B) Only 2
C) 1 and 3
D) All of these
Correct Answer: D
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