1. MZ or DZ? Only your blood grouping laboratory knows for sure

   • Louise Carter-Saltzman
   • Sandra Scarr

   OriginalPaper Pages: 273 - 280

2. Genetic and light intensity effects on the activity and emigratory behavior of the house fly,Musca domestica (L.)

   • P. C. Chabora
   • M. E. Kessler

   OriginalPaper Pages: 281 - 290

3. Portions of the central nervous system controlling reproductive behavior inDrosophila melanogaster

   • Jeffrey C. Hall

   OriginalPaper Pages: 291 - 312

4. A genetic analysis of aggressive behavior in two strains of mice

   • Seymour Kessler
   • Glen R. Elliott
   • Jack D. Barchas

   OriginalPaper Pages: 313 - 321

5. Glucocorticoids and development of audiogenic seizure susceptibility in DBA/1Bg mice

   • Stephen C. Maxson
   • Paul Y. Sze

   OriginalPaper Pages: 323 - 326

6. Social genetics

   • J. P. Scott

   OriginalPaper Pages: 327 - 346

7. Infant mental development

   • Paul L. Nichols
   • Sarah H. Broman

   Letter to the Editor Pages: 347 - 348