Most males have one Y and one X chromosome. Having extra X chromosomes can cause a male to have some physical traits unusual for males. Many men with an extra X chromosome are not aware that they have it, and they lead normal lives. Klinefelter syndrome occurs in about 1 out of 1,000 males.
Meaning: The Greek name Nastassja means-a form of Nastasia.Rating:eaning: The Greek name Nastassja means-a form of Nastasia. Rating:
Nis /nis/ [1 syll.] as a name for girls. Nis' root is Hebrew, and the name Nis means to test. Nis is an alternate spelling of Nissa (Hebrew): also possibly (Scandinavian) elf. Niz is a common surname.Kreatif forms: Nissey.is is a rare given name for females. Nis is an equally rare surname for all people. (2000 U.S. Census). Charted below is the birth name popularity of Nis for girls.