22 AN INTRODUCTION TO MODERN GENETICS 



FIG. PAGE 



150. Effects of scute-i at different temperatures 371 



151. Mutations of Bar 374 



152. Small rearrangements 376 



153. Mutation in maize 381 



154. Proportions of lethal and visible mutations 384 



155. Ionization and mutation rate 386 



156. The unitary character of the mutation process 387 



157. Ionization and visible mutations 388 



158. Mutation constants and sensitive volumes 391 



159. Structure of inert region 396 



160. Sizes 399 



