Although DNA Is the Main Hereditary Material in All Life-

question 18

Multiple Choice

Although DNA is the main hereditary material in all life- forms, it lacks one important characteristic to make it a candidate for the first life- form. Why have researchers rejected the idea that DNA was found in the first
Life- form?

• A) Because it has only four different bases, it does not carry enough information; therefore, it cannot adapt and evolve.
• B) The type of sugar found in DNA is much too complicated to have been present early in Earth's history.
• C) It is not stable enough to have withstood early Earth's harsh atmosphere.
• D) It does not function as a catalyst.

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Definitions:

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