This blog is dedicated to those who carry the J2 "Y" DNA Haplogroup (J-M172), with a focus on J2a4h2, also known as J-L25, with further changes to F3133, and FGC9962. Our "Y" Chromosome is inherited from father to son. Our paternal ancestors will also have the same signature. "J2 originated in northern Mesopotamia, and spread westward to Anatolia and southern Europe, and eastward to Persia and India.