According to wikipedia, it does occasionally happen that a human egg cell undergoes parthenogenesis and starts developing, but as far as has been recorded, the

According to wikipedia, it does occasionally happen that a human egg cell undergoes parthenogenesis and starts developing, but as far as has been recorded, the fetus is never viable and is usually regarded as a type of tumor called a teratoma; occasionally, this does lead to some fetus-like shape of the tumor, in which case it is known as a fetiform teratoma. Interestingly, there are a handful of cases of functioning human individuals who have cell lines in their body that are the result of parthenogenesis: an egg cell starts dividing by itself, and is fertilized only after this process has started. Next, the feritilized cell line develops normally, while the unfertilized cell line keeps developing as well but in limited ways - in the first known case, the white blood cells of a boy were found to be entirely derived from his mother, while other cell lines were normal XY cells inherited from both parents. https://en.wikipedia.org/wiki/Parthenogenesis#Humans https://en.wikipedia.org/wiki/Parthenogenesis#Humans