Molecular evidence that led to the three domain system of classification

The evidence that led to this classification was the different sequences in ribosomal RNA in the different organisms. That factual information led to scientists figuring about how long ago different organisms shared the same ancestor.

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answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

explanation:

1. dermis

2. chemical

3. urine

4. viruses

5. antibodies