ZW is less likely because normally parthenogenesis starts with a haploid egg cell (Z or W) that undergoes meiosis alone, copying its own chromosomes - becoming ZZ if it started as Z and WW if it started as W. WW is normally not viable, just like YY in mammals, so the most likely case of parthenogenesis by far is ZZ, male.
It's a "clone" of half of the mother's DNA. The mother had random inheritance from its parents. So it's not a clone of the grandparents, but it's a copy of (half of the) mix that the mother had.
No, it's more like an extreme case of in-breeding.
On the other hand, if a mammal were to produce a viable fertile offspring through parthenogenesis, then that offspring would be a clone of it's mother.
Meant to say: mammal mother produces a viable offspring through parthenogenesis, which in mammals would be XX, a daughter, an in-bred individual. Now, if that daughter produces another daughter through parthenogenesis, then this second generation of parthenogenesis individual would be a clone of the first generation daughter.
