Looks like Amazondoc wins this one. From the article.

"We performed parentship analyses on the snake and seven of her embryos using microsatellites and AFLP. Four microsatellite loci
developed for this species combined with three loci developed
previously for different snake species revealed too little
variation to discriminate between sperm retention and
parthenogenesis. With AFLP we were able to confirm that
the Artis Zoo female reproduced parthenogenetically."

There was no genetic contribution from a male, which there would have been even in identical twins.

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