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Is DNA found throughout the entire phylogenetic tree?

Question:

Is DNA found throughout the entire phylogenetic tree?

Phylogenetic Tree:

The phylogenetic tree that shows how different organisms evolved from a single common ancestor. Today all cells, including prokaryotes, use DNA as their genetic material.

Answer and Explanation:

Pretty much all organism on the phylogenetic tree have DNA as their hereditary material, however, we can only hypothesize about the first cell. We do...

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The Origin of Life on Earth: Theories and Explanations

from Science 101: Intro to Natural Sciences

Chapter 15 / Lesson 1
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