1. Effects of treatment on differential staining of BrdU labeled metaphase chromosomes: three-way differentiation of M₃ chromosomes

   • R. C. Miller
   • M. M. Aronson
   • W. W. Nichols

   OriginalPaper Pages: 1 - 11

2. Electron microscopy of membrane-associated folded chromosomes of Escherichia coli

   • Ruth Kavenoff
   • Oliver A. Ryder

   OriginalPaper Pages: 13 - 25

3. Karyotype, DNA replication and origin of sex chromosomes in Anopheles atroparvus

   • M. Fraccaro
   • U. Laudani
   • L. Tiepolo

   OriginalPaper Pages: 27 - 36

4. The location of ribosomal cistrons (rDNA) in chromosomes of the rat

   • Yoshio Kano
   • Sakan Maeda
   • Taketoshi Sugiyama

   OriginalPaper Pages: 37 - 42

5. Placement of genes for ribosomal RNA within the nucleolar organizing body of Zea mays

   • Earle B. Doerschug

   OriginalPaper Pages: 43 - 56

6. Cytochemical studies on RNP complexes produced by puff 2-48BC in Drosophila hydei

   • J. Derksen
   • E. Willart

   OriginalPaper Pages: 57 - 68

7. Random distribution of centromere regions at mitosis in cultured cells of Muntiacus muntjak

   • Raymond Mayron
   • Dwayne Wise

   OriginalPaper Pages: 69 - 74

8. Sequence of centromere separation of mitotic chromosomes in Chinese hamster

   • Baldev K. Vig
   • Herbert G. Miltenburger

   OriginalPaper Pages: 75 - 80

9. Human nucleolar organizer chromosomes: satellite associations

   • T. E. Denton
   • W. M. Howell
   • J. V. Barrett

   OriginalPaper Pages: 81 - 84

10. The fine structure of human chromosomes isolated by shearing-sieving

    • R. J. Skaer
    • Susan Whytock

    OriginalPaper Pages: 85 - 90

11. Electron microscopic studies on the polytene chromosomes of Chironomus thummi salivary glands

    • I. I. Kiknadze
    • N. A. Perov
    • Yu. S. Chentsov

    OriginalPaper Pages: 91 - 103