From the DNA point of view, there's no reason the cross A x B and the cross B x A being different
As in fact on the DNA level it'll be AA x BB or BB x AA and the result will be AB which is also BA.
I have no knowledge on the mitochondrial genetics here as it was not under scrutiny when I was at university. And moreover I don't know much about mitochondria in plants. Now…
Mitochondria have their own DNA, and are only transmitted thru oospheres (eggs). So you can guess that if part of the mitochondrial DNA has code used in flowers, AB won't be BA. it'll be: (a and b are mitochondrial DNA)
AAa x BBb = ABa
BBb x AAa = ABb
Add to this that the cross may work only in one direction, for other reasons (anatomic differences between parents or…) And seemingly, there can be different mitochondrial DNA between mitochondrias in the cell…
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Linear Mode
