Multiple Choice
Which statement below is correct?
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25. Phylogeny
Introduction to Phylogeny
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Which of the following statements about phylogenetic trees is true?
A
Phylogenetic trees depict the evolutionary relationships among species.
B
Phylogenetic trees always show the exact time of divergence between species.
C
Phylogenetic trees are based solely on morphological data.
D
Phylogenetic trees can only be constructed for living species.
Verified step by step guidance1
Understand that a phylogenetic tree is a diagram that represents evolutionary relationships among organisms. It is like a family tree but for species.
Recognize that phylogenetic trees are constructed using various types of data, including morphological (physical traits) and molecular (DNA, RNA, protein sequences) data.
Note that phylogenetic trees do not always show the exact time of divergence between species. They often show relative relationships rather than precise timelines.
Acknowledge that phylogenetic trees can include both living and extinct species, as long as there is sufficient data to infer their relationships.
Conclude that the true statement is: 'Phylogenetic trees depict the evolutionary relationships among species.' This reflects the primary purpose of these trees.
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