>>11281409They are not mutually exclusive. An old repost of mine:
AAAbb/AAAbb is the "purebred" first race. (capital leters signify advantageous genes)
aaaBB/aaaBB is the "purebred" second race.
Their first generation offspring is all AAAbb/aaaBB
The second generation (grand children) with two AAAbb/aaaBB parents get 50% chance PER GENE:
aaabb/aaabb (stupid)
aaabB
aaaBb
aaaBB
aaAbb
aaAbB
...
AAAbb
AAAbB
AAABb
AAABB/AAABB (genius not seen before the mixing)
All the combinations like AaAbB/aaABb can occur, too many to list them all.
Basically, when you mix two separate populations, you get some individuals who are exceptionally bad and some who are exceptionally good. The variability increases because of how genetics works, even though it would intuitively seem to many people it should create populations that are more uniform, the opposite is what actually happen.