Why do scientists think RNA, rather than DNA, may have been the original genetic material?
Correct answer: B. The simplest life forms, viruses, use RNA
- A. Most organisms on Earth use RNA as their genetic material
- B. The simplest life forms, viruses, use RNA
- C. RNA is more stable than DNA
- D. RNA has the ability to catalyze a few simple, chemical reactions
Explanation
RNA is the first genetic material in cells because: RNA is capable of both storing genetic information and catalyzing chemical reactions. Essential life processes like metabolism, translation, splicing, etc.
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About Evolution
Evolution describes heritable change in populations over generations through variation, natural selection and adaptation. Lamarckism explains inheritance of acquired characteristics, while Darwinism explains selection of favourable inherited variations; these historical explanations must not be confused with the modern genetic account of evolutionary change.
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