Re-Creation Theory
Confirmation: "All human beings on Earth descended from just a single couple, scientists claim."
As is often the case, the newspaper misinterpreted and exaggerated the
published paper, which was about the use of mitochondrial 'barcodes' to trace species development. They actually said that we can't tell whether a bottleneck reduced the population to the extent that the only descendants to survive to the present were from a single couple, or that there was a population of thousands stable over thousands of years.
The comment they made was:
"Contemporary sequence data cannot tell whether mitochondrial and Y chromosomes clonality occurred at the same time, i.e., consistent with the extreme bottleneck of a founding pair, or via sorting within a founding population of thousands that was stable for tens of thousands of years."
They say the mitochondrial diversity bottleneck appears to be between 100,000 to 200,000 years ago and appears in all animal species, and could be due either to a 'special period' (e.g. massive die-off of animals) or just an example of coevolution:
"The simple hypothesis is that the same explanation offered for the sequence variation found among modern humans applies equally to the modern populations of essentially all other animal species. Namely that the extant population, no matter what its current size or similarity to fossils of any age, has expanded from mitochondrial uniformity within the past 200,000 years."
"The characteristics of contemporary mitochondrial variance may represent a rare snapshot of animal life evolving during a special period. Alternatively, the similarity in variance within species could be a sign or a consequence of coevolution."