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QUESTION 3 When DNA is damaged, most of the time this is followed by.... efficient DNA repair harmful mutations that may lead
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Answer #1

DNA damage is common phenomemnon and can occur due to a multitude of reasons. These reasons include random DNA breakage, errors in replication, stress faced by the cells, presence of superoxide radicals and other DNA-damaging agents etc.

These DNA damages are usually repairs quickly by DNA repair systems. Based on the nature of the DNA damage different systems are activated and come to rescue. These systems include Nucleotide Excision Repair, Homologous Recombination systems, NHEJ or Non-Homologous End-Joining systems, Base Excision repair, etc.

These systems are highly efficient and serve the purpose of preventing the DNA damage.

Therefore, the correct answer is a.

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