As I pointed multiple times, mtDNA is the core of life
Because it controls the energy supply to the entire organism,
including the main DNA (which it can activate/deactivate on demand)
https://www.youtube.com/watch?v=vzqXeAtDnTA
And mtDNA is transferred only through the mother line.
Therefore only the mother can really have kids of her own.
Father is always a dumb cuckold.