객관식
Based on the tree below, which tree shows the same evolutionary relationships?
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25. Phylogeny
Phylogeny
Multiple Choice
From the phylogenetic tree below, what can you infer from the branch lengths for the organisms Pakicetus, Rodhocetus, and Dorudon?
A
They are more closely related to each other than to other organisms on the tree.
B
They are extinct taxa.
C
Those taxa experienced less genetic change than other branches on the tree.
D
They represent the ancestors of modern whales and dolphins
검증된 단계별 안내1
Examine the phylogenetic tree to understand the relationships between the organisms. The tree shows evolutionary relationships, with branch lengths representing time or genetic change.
Identify the organisms in question: Pakicetus, Rodhocetus, and Dorudon. These are positioned on the tree as branches leading to modern whales and dolphins.
Observe the branch lengths for these organisms. Shorter branches typically indicate less genetic change or a more recent common ancestor, while longer branches suggest more genetic change or an older divergence.
Note that Pakicetus, Rodhocetus, and Dorudon are positioned on branches that do not extend to the present, indicating they are extinct taxa.
Consider the evolutionary context: these organisms are part of the lineage leading to modern whales and dolphins, suggesting they are ancestral forms or closely related to the ancestors of these modern species.
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