The fact that almost all organisms use the same genetic code is evidence for evolution because it suggests that
Correct answer: B. all life shares a common ancestor
- A. all species were created separately
- B. all life shares a common ancestor
- C. mutation is impossible
- D. DNA is chemically unstable
Explanation
A universal code is exactly what common descent predicts: one original system inherited by every branch of life. If organisms had separate origins there would be no reason for bacteria and humans to translate codons identically.
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About Concept of Evolution
Evolution is the heritable change in populations over generations, driven by mutation, recombination, natural selection, genetic drift and reproductive isolation. Questions examine variation, adaptation, survival and reproduction, speciation, fossil and anatomical evidence, and the difference between individual acclimatization and evolutionary change in a population.
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