What is the role of excision repair?

What is the role of excision repair?

• A. To create new genetic information
• B. To inspect and repair damaged DNA
• C. To code for new amino acids
• D. To facilitate cell division

Answer: (B)

Excision repair plays a crucial role in maintaining the integrity of DNA by identifying and correcting damage that can occur due to various reasons, such as environmental factors or normal cellular processes. This repair mechanism involves the removal of damaged sections of DNA, followed by the synthesis of new, correct DNA to replace the excised segments. By carefully inspecting and repairing damaged DNA, excision repair helps prevent mutations that could lead to various diseases, including cancer. This process is vital for ensuring that the genetic information is preserved accurately as cells divide and replicate. The other options pertain to different biological functions and processes that do not describe the specific function of excision repair. For instance, creating new genetic information and coding for amino acids involves different mechanisms, such as transcription and translation, while facilitating cell division is primarily the role of other cellular processes rather than DNA repair.

Excision repair plays a crucial role in maintaining the integrity of DNA by identifying and correcting damage that can occur due to various reasons, such as environmental factors or normal cellular processes. This repair mechanism involves the removal of damaged sections of DNA, followed by the synthesis of new, correct DNA to replace the excised segments.

By carefully inspecting and repairing damaged DNA, excision repair helps prevent mutations that could lead to various diseases, including cancer. This process is vital for ensuring that the genetic information is preserved accurately as cells divide and replicate. The other options pertain to different biological functions and processes that do not describe the specific function of excision repair. For instance, creating new genetic information and coding for amino acids involves different mechanisms, such as transcription and translation, while facilitating cell division is primarily the role of other cellular processes rather than DNA repair.