Which one of the following statements is correct?
Cichlids diverged to form three distinct species 100 million years ago - VCE - SSCE Biology - Question 25 - 2019 - Paper 1
Question 25
Which one of the following statements is correct?
Cichlids diverged to form three distinct species 100 million years ago.
C. chanos was the last species to diverge... show full transcript
Worked Solution & Example Answer:Which one of the following statements is correct?
Cichlids diverged to form three distinct species 100 million years ago - VCE - SSCE Biology - Question 25 - 2019 - Paper 1
Step 1
Cichlids diverged to form three distinct species 100 million years ago.
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Answer
This statement lacks evidence or is not widely supported in the scientific literature, as the diversification of cichlid species is known to have begun significantly later.
Step 2
C. chanos was the last species to diverge from the most distant common ancestor.
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Answer
This claim is not strongly substantiated. The phylogenetic relationships suggest other species diverged later.
Step 3
Gasterosteiformes, Beloniformes, and Cichliformes do not share a common ancestor.
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Answer
This statement is incorrect. These groups are all part of a broader evolutionary tree and indeed share a common ancestor.
Step 4
T. flavidus and T. lineatus diverged to form two distinct species 25 million years ago.
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Answer
This is the correct statement as it is supported by genetic research indicating the divergence timeline of these species.
