Untersuchungen über die Entstehung der Parthenogenese bei Solenobia triquetrella F. R. (Lepidoptera, Psychidae) J. Seiler OriginalPaper Pages: 503 - 539
A cytological demonstration of arrhenotoky in three mites of the family Phytoseiidae Roger I. C. HansellMargaret M. MollisonWilliam L. Putman OriginalPaper Pages: 562 - 567
Testicular chromosomes of Gallus domesticus E. H. R. FordD. H. M. Woollam OriginalPaper Pages: 568 - 578
Close karyological kinship between the reptilian suborder serpentes and the class aves Willy BeçakMaria Luiza BeçakSusumu Ohno OriginalPaper Pages: 606 - 617
Size variation and orientation of the human Y chromosome Ulla Gripenberg OriginalPaper Pages: 618 - 629
The effects of inhibitors of RNA and protein synthesis on cytological development during meiosis C. Lindley Kemp OriginalPaper Pages: 652 - 665