1. Foreword

   • S. Ramaseshan

   EditorialNotes Pages: 1 - 1

2. JBS Haldane-an appreciation

   • James F. Crow

   OriginalPaper Pages: 3 - 5

3. The role of compensatory neutral mutations in molecular evolution

   • Motoo Kimura

   OriginalPaper Pages: 7 - 19

4. A sampling theory for local selection

   • Stanley Sawyer
   • Daniel Hartl

   OriginalPaper Pages: 21 - 29

5. Non-reciprocal crossing over in phage λ

   • Franklin W. Stahl
   • Mary M. Stahl

   OriginalPaper Pages: 31 - 39

6. Evolution of sex ratios in social hymenoptera: kin selection, local mate competition, polyandry and kin recognition

   • N. V. Joshi
   • Raghavendra Gadagkar

   OriginalPaper Pages: 41 - 58

7. Cytogenetic basis of human cancer

   • R. S. K. Chaganti

   OriginalPaper Pages: 59 - 67

8. Max Delbrück and the birth of molecular biology

   • William Hayes

   OriginalPaper Pages: 69 - 84