Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:According to your phylogenetic tree of faces, which character states are synapomorphies?
(Note: An empty text box follows, possibly indicating a space for input or note-taking.)
Transcribed Image Text:This diagram is a cladogram that represents the evolutionary relationships between five different species. Each branch point, or node, indicates a common ancestor shared by the species branching off from it. Traits that arise within particular branches are demarcated by horizontal lines and labels.
1. **Species 4** diverged with the characteristic of having "no tail."
2. Moving right, **Species 2** also diverges from the main line after the evolution of "no tail."
3. **Species 3** branches off with the features "small nose" and "human ears."
4. **Species 5** shows a divergence at the feature "no tail" and subsequently "human ears."
5. **Species 1** is the furthest on the right, marked by having "human ears," and additional traits: "round jaw," "small neck," and "angled brow."
This cladogram helps illustrate how different anatomical features have evolved and which species share these traits, indicating common ancestry.
Expert Solution
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A phylogenetic tree is a branching diagram or a tree showing the evolutionary relationships among various types of biological species or other entities based upon the similarities and differences in their physical or genetic characteristics.
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