What type of traits are informative for determining phylogenetic relationships?Multiple choice question.Only synapomorphiesNeither synapomorphies nor symplesiomorphiesOnly symplesiomorphiesBoth synapomorphies and symplesiomorphies
Question
What type of traits are informative for determining phylogenetic relationships?Multiple choice question.Only synapomorphiesNeither synapomorphies nor symplesiomorphiesOnly symplesiomorphiesBoth synapomorphies and symplesiomorphies
Solution
The correct answer is "Only synapomorphies".
Here's why:
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Phylogenetic relationships are determined based on shared derived characteristics, also known as synapomorphies. These are traits that are shared by two or more taxa and their most recent common ancestor.
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Symplesiomorphies, on the other hand, are shared ancestral traits. These traits are shared by two or more taxa, but they are also shared with other taxa that are not part of the group of interest. Therefore, they are not informative for determining phylogenetic relationships.
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While both synapomorphies and symplesiomorphies are types of traits, only synapomorphies are informative for determining phylogenetic relationships. This is because they provide information about shared ancestry that is specific to the group of interest.
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Therefore, the answer is "Only synapomorphies".
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