Interesting proposal: http://www.nature.com/news/the-hidden-risks-for-three-person-babies-1.18408?WT.mc_id=TWT_NatureNews … Counter-anecdote: my (healthy, very European) wife carries an ancient African mtDNA lineage.
Replying to @dgmacarthur
@dgmacarthur plus all those individuals like myself whose ancestry is mixed across continents and who have no difficulty doing stuff
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