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What makes DNA the most abundant genetic material?
Question

What makes DNA the most abundant genetic material?

A.

Its high mutation rate

B.

Its stable double-helical structure

C.

Its enzymatic roles

D.

Its interaction with proteins

Correct option is B

The correct answer is: (B) Its stable double-helical structure

Explanation:

  • The double-helix structure of DNA is what makes it stable and reliable as a medium for storing genetic information. This stable structure allows DNA to be passed on accurately during cell division, ensuring the persistence of genetic information across generations.
  • The structure consists of two complementary strands of nucleotides twisted into a helix, providing resistance to damage and allowing for effective replication and transcription. This stability contributes to DNA's abundance as the primary genetic material in most organisms.

Information Booster:

  • DNA's stability is key to its role in inheritance. The double-helical structure helps protect the genetic material from external damage and allows for repair mechanisms to fix any errors or damage.
  • RNA, though involved in genetic processes, is less stable and more prone to degradation than DNA, making DNA the preferred medium for long-term genetic storage.

Additional Information:

  • Its high mutation rate: Incorrect. A high mutation rate would actually be detrimental to genetic stability, not an advantage for genetic material.
  • Its enzymatic roles: Incorrect. DNA does not have enzymatic roles. Proteins like enzymes are responsible for many cellular functions, not DNA itself.
  • Its interaction with proteins: Incorrect. While DNA interacts with proteins (e.g., histones in chromosomes), this interaction is more about regulation and packaging, not the reason for its abundance.

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