Which one of the following is a correct conclusion from Phylogeny I?
A - VCE - SSCE Biology - Question 39 - 2022 - Paper 1
Question 39
Which one of the following is a correct conclusion from Phylogeny I?
A. Frogs arose more recently than coelacanths.
B. The common ancestor of all vertebrates is anim... show full transcript
Worked Solution & Example Answer:Which one of the following is a correct conclusion from Phylogeny I?
A - VCE - SSCE Biology - Question 39 - 2022 - Paper 1
Step 1
A. Frogs arose more recently than coelacanths.
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Answer
This statement suggests a timeline of evolution, indicating that frogs are a more recent development compared to coelacanths. Based on phylogenetic relationships, this cannot be determined as correct without specific evidence from the phylogeny.
Step 2
B. The common ancestor of all vertebrates is animal Q.
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Answer
This statement is plausible because phylogenies often denote common ancestors. However, the specific identification of 'animal Q' needs validation through phylogenetic data.
Step 3
C. The most closely related groups are lampreys and hagfishes.
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This assertion may hold true as lampreys and hagfishes are both jawless fish; however, further detail from the phylogenetic tree is required to confirm their relationship.
Step 4
D. Animal R is the most recent common ancestor of ray-finned fishes and sharks.
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Answer
This is a critical evolutionary point. If the phylogeny supports that animal R is indeed a common ancestor, this conclusion is valid. The relationships among these groups must be clearly shown in the tree.
