>
> > However, it cannot explain the enrichment of lineages A, C, D, and G in
> arctic region and the fact that only two mtDNA lineages (M and N) left
> Africa to colonize Eurasia. That contradiction thus gave rise to an
> alternative hypothesis: natural selection. -- Huang, S., Wang, C., & Li, H.
> (2014). Natural selection on human mitochondrial DNA. Biotechnology
> Frontier, 3(1).
>

The above case is similar to that of the bee mitotypes.  It certainly
appears to me that certain bee mitotypes are more adaptive under certain
conditions than others.

But my question went beyond this.  In certain dog breeds (similar genotype)
there may exists more than one mitotype.  I'm curious about the relative
contributions of genotypes and mitotypes to selective breeding.

-- 
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com

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