The programs in njbafb-unix.tar.Z are for (1) constuctiong a neighbor-joining tree or a UPGMA tree from allele frequency data of microsatellite DNA loci or other genetic markers and (2) computing heterozygosities and Gst. (1) Ftp njbafd-unix.tar.Z and njbafd-unix.readme onto your system in the binary mode. (2) Type "uncompress njbafb-unix.tar.Z". (3) Type "tar xvf njbafb-unix.tar". (4) Type "source compile.sh" or "source compile.gcc.sh" to compile the programs. Executables included in the njbafb-unix.tar.Z are for the Sun workstations with Solaris 2.4. (4) Read the read.me file first. If you have problems or comments, please send email to: ntakezak@lab.nig.ac.jp April 3, 1998 Naoko Takezaki National Institute of Genetics 1111 Yata, Mishima Shizuoka 411, Japan TEL +81-559-81-6847 FAX +81-559-81-6848