Based on the tree below, which statement is correct? (A)...

Name: Problem 5, Chapter 26: Campbell Biology
Uploaded: 2021-02-13T23:36:16-08:00
Duration: 2 min 35 s
Channel: Courtney Burson
Description: Based on the tree below, which statement is correct? (A) Lizards and goats form a sister group. (B) Salamanders are a sister group to the group containing lizards, goats, and humans. (C) Salamanders are more closely related to lizards than to humans. (D) Goats and humans are the only sister group shown in this tree.

Based on the tree below, which statement is correct? (A) Lizards and goats form a sister group. (B) Salamanders are a sister group to the group containing lizards, goats, and humans. (C) Salamanders are more closely related to lizards than to humans. (D) Goats and humans are the only sister group shown in this tree.

Based on the tree below, which statement is correct?
(A) Lizards and goats form a sister group.
(B) Salamanders are a sister group to the group containing lizards, goats, and humans.
(C) Salamanders are more closely related to lizards than to humans.
(D) Goats and humans are the only sister group shown in this tree.

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Key Concepts

Phylogenetic Trees

Phylogenetic trees are diagrams that show the evolutionary relationships among various species. They depict the pattern of lineage splitting from common ancestors, allowing scientists to visualize and infer the historical pathways of evolution.

Sister Groups

Sister groups are pairs of clades or taxa that share an immediate common ancestor, making them each other’s closest relatives. Understanding sister group relationships is crucial for interpreting evolutionary histories and the branching order of trees.

Tree Topology

Tree topology refers to the branching structure of a phylogenetic tree, illustrating how different groups are related based on their points of divergence. It is key to determining which groups are more closely related than others.

Cladistic Analysis

Cladistic analysis is a method used to classify organisms by identifying shared derived characteristics. This approach underpins the construction of phylogenetic trees, allowing for the systematic determination of evolutionary relationships.

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