ketab-ol-ein, which was written by ahmad farahidi, is one of the oldest dictionaries that exist today. in the preliminary discussion we mentioned that, although historical sources show that the work of ibn abbas looks like a dictionary, it is becoming accepted that ketab-ol-ein is the first dictionary. the article starts with explanations about the life and work of khalilibn ahmad. we have also...

The Genetics Society of America (GSA) Medal is awarded to an individual for outstanding contributions to the field of genetics in the past 15 years. Recipients of the GSA Medal are recognized for elegant and highly meaningful contributions to modern genetics and exemplify the ingenuity of GSA members. The 2015 recipient is Steven Henikoff, whose achievements include major contributions to Droso...

ith this issue the journal introduces the first major change in its format in more than nine decades of publication. To be sure, there have been many modifications in typography and details of style during and after the development ofthe familiar format that has characterized theJournal since the early part of this century, but at no time have substantial changes been instituted. It may seem li...