Editing Phylogenetics and the Tree of Life (section)

== <span style="color: #FFFFFF;">Understanding</span> ==
Phylogenetics is understood through '''Branching''' and '''Evidence'''.

'''1. The "Family" Diagram (The Tree)''':
"Distance" is "Time."
* In a **Phylogenetic Tree**, the "Ends" are the **"Species"** living today.
* The "Lines" represent **"Time."**
* The **"Nodes"** (Splits) represent **"Speciation."**
* To "Find" the **"Relationship,"** you look for the **"Most Recent Common Ancestor"** (MRCA).
* It is "The Genealogy of the Planet."

'''2. The "Genetic" Ledger (Molecular Evidence)''':
"DNA doesn't Lie."
* (See Article 147). Before DNA, we "Guessed" relationships based on **"Appearance"** (Morphology).
* This led to "Errors" (e.g., 'Thinking 'Falcons' were 'Hawks' when they are actually more related to 'Parrots'').
* **Molecular Phylogenetics** "Compares" the **"Sequence"** of "Proteins or DNA."
* The **"More Similar"** the DNA, the **"More Recent"** the "Split."
* "Biology" is "Comparative Literature."

'''3. The "Invisible" Root (LUCA)''':
"Unity" of Life.
* (See Article 148). Every "Life Form" on Earth uses the **"Same Genetic Code"** (DNA/RNA) and the **"Same 20 Amino Acids."**
* This is the **"Smoking Gun"** for **Common Ancestry.**
* We "All" "Inherited" the "Same Basic Operating System" from **LUCA.**
* "Evolution" is "Variation on a Single Theme."

'''The 'Three Domains' System (Carl Woese, 1977)'''': A "Revolution" in the tree. By "Analyzing" **rRNA**, Woese "Discovered" that "Life" is split into three "Great Branches": **Bacteria**, **Archaea**, and **Eukarya** (Humans/Plants/Fungi). It proved that "Archaea" (Extremophiles) were "Not Bacteria," "Changing" our "Map of the Biosphere" forever.
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