Years ago, scientists determined that all mitochondrial DNA in humans came from a common African ancestor. Based on this information, which of the following can be inferred?
All modern humans evolved from one group of African H. sapiens.
Ancestors of H. sapiens all migrated from Africa and evolved into different species.
Several populations of H. sapiens from different continents moved to Africa.
The mitochondrial DNA of H. sapiens can evolve to form new species over millions of years.
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