Thanks to DNA testing, scientists have discovered that a tree in South America is genetically similar to one in Australia. What is one possible evolutionary inference they could make from this discovery?It’s a coincidence.Both species share an ancestor that lived when the world had supercontinents.The trees are adapted to seawater and floated between continents.No inferences can be made.
Question
Thanks to DNA testing, scientists have discovered that a tree in South America is genetically similar to one in Australia. What is one possible evolutionary inference they could make from this discovery?It’s a coincidence.Both species share an ancestor that lived when the world had supercontinents.The trees are adapted to seawater and floated between continents.No inferences can be made.
Solution
The most plausible evolutionary inference that scientists could make from this discovery is that both tree species share a common ancestor that lived when the world had supercontinents. This is based on the theory of continental drift, which suggests that the continents were once joined together in a supercontinent, allowing species to spread across different regions. Over time, these continents drifted apart, isolating species and leading to divergent evolution. However, the genetic similarities between the two trees suggest that they have retained some common genetic traits from their shared ancestor.
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