The G-banding patterns of chicken chromosomes had characteristic and distinctive bands along the individual chromosome arms. Especially, the six larger pairs of chicken chromosomes were easily identifiable. By the karyotype and densitometric analysis, the forms of G-banding marker in each breed were as followed. Most breeds had a similar chromosome configuration although each macrochromosome had different pattern in band number, size and darkness. This could be explained as a consequence of chromosome condensation during mitosis and of genetic material differences.