Ron Apland apland at
Fri Feb 20 12:36:05 EST 1998

> <snip>
>>Even identical twins, however, are of at least two kinds. All share
>>original nuclear DNA, but some may have different mitochondrial DNA.
> <snip>
>       Forgive my ignorance, but pray tell how identical twins may 
> possess different mitochondrial genomes?

Ditto for me. Does not the molecular clock method of tracing human 
ancestry depend on mitochondrial DNA? If cells of a person
have different mitochondrial DNA or mitochondria within a cell have
different DNA then how is this molecular clock calculated?


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