Complete Moles:The zygote chromosome in the case of a complete hydatiform mole is product of;
1- empty ovum fertilization by 2 sperms OR
2- empty ovum fertilized by 1 sperm which its DNA is duplicated later on?
- 80% are 1 sperm which is duplicated (homozygote, uniparental, unispermy, always 46XX)
- 20% are 2 sperms (heterozygote, uniparental, dispermy, could be 46XX or 46XY)