chromosome size article 16 nonhuman 14 heterochromatin 10 Animals 8 animal cell 8 chromosome analysis 8 chromosome structure 8 controlled study 8 mitosis 8 C-banding 6 GC rich sequence 6 Humans 6 animal experiment 6 chromosome 6 chromosome C band 6 genetic variability 6 male 6 sex chromosome 6 Argentina 5 4',6 diamidino 2 phenylindole 4 AT rich sequence 4 Algorithms 4 Biological Markers 4 Borgmeier 4 Chromosomes 4 DNA 18S 4 DNA probe 4 Diptera 4 Eukaryota 4