THE MOLECULAR BASIS OF INHERITANCE
DNA REPLICATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
chemicals.
|
|
|
radiation.
|
|
|
mistakes in replication.
|
|
|
extreme temperatures
|
Detailed explanation-1: -Mutations can result from errors in DNA replication during cell division, exposure to mutagens or a viral infection.
Detailed explanation-2: -Mutations result either from accidents during the normal chemical transactions of DNA, often during replication, or from exposure to high-energy electromagnetic radiation (e.g., ultraviolet light or X-rays) or particle radiation or to highly reactive chemicals in the environment.
Detailed explanation-3: -Mutation is caused by the alteration of single base units in DNA, or the deletion, insertion, or rearrangement of larger sections of genes or chromosomes. Thus, the correct answer is option D.
Detailed explanation-4: -Answer: Among the following, the one that cannot cause mutation is Products produced by cells involved in chronic inflammation. Explanation: The mutation is defined as the sudden, heritable changes in the organisms due to changes in the number of chromosomes.