In Pursuit of the Gene

ILLUSTRATIONS
Charles Darwin and Francis Galton facing page 1
Portrait of Galton as a young man 22
Galton’s first quincunx 32
Schematic of quincunx 33
Graph of inheritance in size of sweet
pea seeds 35
Rate of regression in hereditary stature 38
Ellipse 39
Walter Frank Raphael Weldon 44
Illustration of sum of two
normal curves 48
A diagram for heredity 62
Pedigree chart for tricolors 64
Hugo de Vries 68
The “handsome” portrait of Mendel 86
Four kinds of fertilization 93
William Bateson 104
Karl Pearson and Francis Galton (age 87) 118
Darbishire’s illustration of
ancestry of Japanese waltzing mice 126
Edward Beecher Wilson (1890) 144
Nuclei of Ascaris 148