Multiple Choice
How does the distribution of marsupials around the world provide evidence for evolution?
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21. Evolution
Evidence of Evolution
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Why are vestigial structures considered critical evidence of evolution?
A
They show that all organisms have the same genetic material.
B
They demonstrate that organisms have structures that were functional in ancestors but are no longer needed.
C
They indicate that organisms can develop new structures over time.
D
They prove that all species have a common ancestor.
Verified step by step guidance1
Vestigial structures are anatomical features that have lost their original function through evolution. They are remnants of structures that were fully functional in ancestral species.
These structures provide evidence of evolutionary change because they show how organisms have adapted over time, losing functions that are no longer necessary for survival in their current environment.
The presence of vestigial structures supports the idea that species have evolved from common ancestors, as these structures are often similar across related species.
Vestigial structures highlight the process of natural selection, where traits that are not advantageous may diminish or disappear over generations.
By studying vestigial structures, scientists can trace the evolutionary history of organisms, providing insights into how species have diverged and adapted from their ancestors.
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