User blog comment:Fusedtwilight/A theroy about Leah/@comment-4475299-20120105235819

Remember reading here on the wiki that the ability to phase passes from father to son, pretty much like the Y chromosome in men. No matter the chromosomal aberration, any individual carrying at least a Y chromosome is genetically and most often phenotipically male. Then there's that unexplained extra pair of chromosomes in Jacob's make up, which nobody remembered to tell us whether is present in the other wolves. So, who knows?