The normal characters: colours of cotyledons and seed-coats, 120.
Shape, 122. Stability and variability, 124. Results of crossing in
regard to seed-characters: normal and exceptional, 129. Analysis of
exceptions, 132. The “mule” or heterozygote, 133.
IV. Professor Weldon’s collection of “Other evidence concerning
Dominance in Peas.”
A. In regard to cotyledon colour: Preliminary, 137. Xenia, 139.
(1) Gärtner’s cases, 141. (2) Seton’s case, 143. (3) Tschermak’s
exceptions, 145. (3_a_) _Buchsbaum_ case, 145. (3_b_) _Telephone_
cases, 146. (3_c_) _Couturier_ cases, 147.
B. Seed-coats and Shapes. 1. Seed-coats, 148. 2. Seed-shapes: (_a_)
Rimpau’s cases, 150. (_b_) Tschermak’s cases, 152. 3. Other phenomena,
especially regarding seed-shapes, in the case of “grey” peas. Modern
evidence, 153.