A chromosome microdissection and microisolation technique in combinati
on with filter hybridization was developed for chromosomal localizatio
n of cloned chicken genes. The DNA was obtained from microdissected ch
romosome regions of metaphase spreads. Dissected DNA was amplified by
polymerase chain reaction (PCR). The chicken MHC gene located on the n
ucleolar chromosome and beta-actin gene located on chromosome 2q were
chosen as tests for the procedure and then detected by dot blot analys
is using amplified chromosomal DNA probed with biotinylated DNA. The s
tudy establishes the technique of using chromosome microdissection and
microisolation for localization of cloned genes as a complementary or
alternative approach to both in situ DNA/chromosome hybridization and
fluorescent in situ hybridization.