The other factor unaddressed here is methylation. To form a complete human person, as far as we know, you must have one set of chromosomes from a female imprint

The other factor unaddressed here is methylation. To form a complete human person, as far as we know, you must have one set of chromosomes from a female imprinted via an ovum and another from a male imprinted via a sperm. If this doesn't take place, you may have strange genetic symptoms. Male bodies deactivate certain genes and reactivate some others so that, when combined with the way in which female bodies do the same thing, the resultant genome has a full set of proteins sufficient to form of a homestatically stable human. When this goes wrong, genetic disease can occur such as what happens with Angel man and Prader willi syndrome, which is caused by the exact same mutation but dependent on the sex of the parent it was inherited from.