Structural modifications of the mitotic apparatus during the early cleavages in sand dollar eggs Hans A. Went OriginalPaper Pages: 219 - 242
Cromosomes of the horse, the donkey, and the mule José M. TrujilloChristina SteniusSusumu Ohno OriginalPaper Pages: 243 - 248
A supernumerary chromosome with an accumulation mechanism in the lecanoid genetic system Uzi Nur OriginalPaper Pages: 249 - 271
The fine structure of chromosomes in pigeon spermatocytes B. R. NebelE. M. Coulon OriginalPaper Pages: 272 - 291
Enzyme effects on pachytene chromosomes of the male pigeon evaluated with the electron microscope B. R. NebelE. M. Coulon OriginalPaper Pages: 292 - 299
Variation of the chromosome phenotype in zea, solanum and salvia A. Lima-de-FariaPatricia Sarvella OriginalPaper Pages: 300 - 314
Comparison of chromosome size in species of anemone and their hybrids Margaret Heimburger OriginalPaper Pages: 328 - 340