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Consider the following statements and choose the correct option:
1. Mutation is the only phenomenon that leads to variation in DNA.
2. Induced mutations are produced in response to specific external factors and chemicals.
3. Mutations are heritable changes in DNA.
4. Mutations are always beneficial.
Option: 1
1, 2 & 3
Option: 2
2 & 3
Option: 3
2, 3 & 4
Option: 4
1, 3 & 4
Answers (1)
As we have studied:
- In addition to recombination, mutation is another phenomenon that leads to variation in DNA.
- Induced mutation are produced in response to specific external factors and chemicals.
- Mutation is a heritable change in DNA sequence.
- Mutations can be harmful, beneficial, or have no effect.
Hence, the correct answer is option b.
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