Key Idea.
Section 1
Reading the Nodes (Time)
In an evolutionary tree, the vertical position of the branching point (node) represents time.
Section 2
Determining Relatedness
"Who is more closely related?" is the most common question. The rule is: Look for the Most Recent Common Ancestor.
A whale is more closely related to a hippo than to a cow. Why? Because the "Whale-Hippo" ancestor lived more recently than the "Whale-Cow" ancestor.
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Section 1
Reading the Nodes (Time)
In an evolutionary tree, the vertical position of the branching point (node) represents time.
Section 2
Determining Relatedness
"Who is more closely related?" is the most common question. The rule is: Look for the Most Recent Common Ancestor.
A whale is more closely related to a hippo than to a cow. Why? Because the "Whale-Hippo" ancestor lived more recently than the "Whale-Cow" ancestor.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter