Fine structure studies on phragmoplast and cell plate formation Andrew Bajer OriginalPaper Pages: 383 - 417
Factors involved in the expression of gene activity in polytene chromosomes H. D. Berendes OriginalPaper Pages: 418 - 437
The replication of human heterochromatin in serial culture Jean H. Priest OriginalPaper Pages: 438 - 455
The karyotype of some Australian species of Macropathinae (Gryllacridoidea — Rhaphidophoridae) Alejo MesaAmilton FerreiraR. S. de Mesa OriginalPaper Pages: 456 - 466
Chromosome number in the lizard genus Uta (family Iguanidae) Lewis A. PennockDonald W. TinkleMargery W. Shaw OriginalPaper Pages: 467 - 476