Question about multiple sire's

[OhhWatALoser]

when people mate more than one male to one female, what are they striving for?

the best possible chance of the female laying eggs, if one male doesn't get the job done, others will.

and your odds of normals don't change if they are all heterozygous morphs, like in his above example spider n pin x pastel, assuming both males have an equal chance of fertilizing eggs your odds would be

* Would it be possible, though, to get a chimera of both sires? By which I mean that each egg would be independently fertilized, then fuse?

from what I understand, no, since theory is chimeras are twins inside an egg that merge and only 1 sperm can fertilize one egg. If they are caused by different egg fusing... I guess it possible but your looking at a bigger long shot than breeding a quad het to a quad het. lol