english: And the reason is because in certain individuals, they can actually have genetic changes or mutations that are not passed down from the mother or from the father, but actually start brand new in them, mutations that are present in the egg or the sperm at the time of conception but have not been passed down generation through generation within the family.
non_english: To je zato što neke osobe mogu imati genetske promene ili mutacije koje ne potiču od majke ili od oca nego počinju u njima samima, to su mutacije koje su prisutne u jajašcu ili u spermi u vreme začeća ali se ne prenose sa generacije na generaciju unutar porodice.