1. The Malacca tilapia hybrids

   • C. F. Hickling

   OriginalPaper Pages: 1 - 10

2. Mutagenic action of actinophage

   • S. L. Alikhanian
   • T. S. Iljina

   OriginalPaper Pages: 11 - 19

3. Optimum mutation rate and degree of dominance as determined by the principle of minimum genetic load

   • Motoo Kimura

   OriginalPaper Pages: 21 - 34

4. ‘Lurcher’, a new gene in linkage group XI of the house mouse

   • Rita J. S. Phillips

   OriginalPaper Pages: 35 - 42

5. Chromosome studies in species ofDracaena with special reference to their means of speciation

   • Arun Kumar Sharma
   • Praphulla Chandra Datta

   OriginalPaper Pages: 43 - 76

6. Quantitative inheritance inDrosophila

   • N. Gilbert

   OriginalPaper Pages: 77 - 83

7. The vigour and male sterility of hybrids between the speciesTriturus vulgaris andT. helveticus

   • H. Spurway
   • H. G. Callan

   OriginalPaper Pages: 84 - 117

8. Environmental variability within inbred lines and single crosses of maize

   • D. B. Shank
   • M. W. Adams

   OriginalPaper Pages: 119 - 126

9. The coefficient of inbreeding in case of repeated full-sib-matings

   • F. E. Binet
   • R. T. Leslie

   OriginalPaper Pages: 127 - 130

10. The interpretation of Carter’s results on induction of recessive lethals in mice

    • J. B. S. Haldane

    OriginalPaper Pages: 131 - 136

11. Interaction between rice varieties

    • Subodh Kumar Roy

    OriginalPaper Pages: 137 - 152

12. Book reviews

    • J. B. S. Haldane
    • K. R. Dronamraju
    • Theodosius Dobzhansky

    BookReview Pages: 153 - 168