DNA in Halakhah

Judaism and Jewish law are eternal and immutable. But the world changes and presents novel challenges. Modern science and developing technology create facts on the ground that raise relevant contemporary questions of which Halakhah must take cognizance.
Fingerprint examination, blood typing and DNA matching were all unknown until recent decades. Jewish law posits strict laws of evidence and generally excludes circumstantial evidence for most purposes. Rabbi Bleich\x27s comprehensive work explores the nature of DNA evidence in establishing paternity, the relief of agunot, mamzerut, inheritance, identity as a Jew and as a kohen, the so-called “Jewish” gene and the kohen gene.