Studies on male and female meiosis in Indian Allium R. N. GohilRanjana Kaul OriginalPaper Pages: 123 - 127
A comparison of chiasma frequency and distribution between sexes in three species of grasshoppers Hugh L. FletcherGodfrey M. Hewitt OriginalPaper Pages: 129 - 144
Meiosis in four trisomic and one double trisomic males of the newt Pleurodeles waltlii Catherine Guillemin OriginalPaper Pages: 145 - 155
Evidence for a highly differentiated sex chromosome heteromorphism in the salamander Necturus maculosus (Rafinesque) Stanley K. Sessions OriginalPaper Pages: 157 - 168
Cytological sub-division of S-phase in the Syrian hamster (Mesocricetus auratus) John R. K. SavageS. P. Bhunya OriginalPaper Pages: 169 - 180
Prae- and postreplication repair in pronucleus chromosomes of Phryne after sperm irradiation Norbert Israelewski OriginalPaper Pages: 181 - 191
Isolation and mapping of the rRNA genes in the macronucleus of Oxytricha fallax Brian B. Spear OriginalPaper Pages: 193 - 202
Arrangement of coding and non-coding sequences in the DNA molecules coding for rRNAs in Oxytricha sp. Marshal T. SwantonArthur F. GreslinDavid M. Prescott OriginalPaper Pages: 203 - 215
Gene-sized DNA molecules of the macronuclei in three species of hypotrichs: Size distributions and absence of nicks Marshal T. SwantonJohn M. HeumannDavid M. Prescott OriginalPaper Pages: 217 - 227