The ONLY way for there to be different looking critters is if the babies were haploid (having half the chromosomes of normals). Then, yes, because of segregation and ind. assortment, you could have different looking babies. This is roughly analogous to what happens in whiptail lizards...where there is a doubling of chromosomes after meiosis to create a diploid zygote (I know it sounds wierd)...I think parthenogenesis is extremeley unlikely in this case...when it does happen in normally sexually reproducing animals, it's thought to be a last resort mechanism (the female is older and has never been with a male of the same species). I think there was a phantom mating or sperm retention here...just my 2 cents.

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