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The shingleback lizard is closely related to the bluetongue lizard - VCE - SSCE Biology - Question 17 - 2002 - Paper 1
Question 17
The shingleback lizard is closely related to the bluetongue lizard. The bluetongue has a long pointed tail and smooth scales. The shingleback has a short stumpy tail... show full transcript
Worked Solution & Example Answer:The shingleback lizard is closely related to the bluetongue lizard - VCE - SSCE Biology - Question 17 - 2002 - Paper 1
Step 1
The evolution of these characteristics in the shingleback is an example of which type of evolution?
Answer
To determine the type of evolution represented by the shingleback lizard's characteristics, we need to analyze the evolutionary relationship between the shingleback and the bluetongue lizard.
In this case, both lizards are closely related, but they have developed different physical traits due to adaptations to different environments. The shingleback lizard has adapted its stumpy tail and rough scales for better survival in its habitat, while the bluetongue has long pointed tail and smooth scales.
This scenario is an example of divergent evolution, where two closely related species evolve distinct features, showing that they have diverged from a common ancestor to adapt to different ecological niches. Consequently, the correct choice is:
C. divergent