Heredity and sex . n A-E Fig. 61. — I. Diagram of five pure lines of beans (A, B, C, D, and E)and a population formed by their union, A-E. II. Diagrams illustrating apure line of beans and two new biotypes derived from it. The upperdiagram indicates the original biotype; the second and third diagram in-dicate the elongated (narrower) and shorter (broader) type of beans. Xindicates the average class of the original biotype. (After Johannsen.) SECONDARY SEXUAL CHARACTERS 123 taken for granted that by selecting a particular kindof individual the species will move in the directionof selection. A f
Heredity and sex . n A-E Fig. 61. — I. Diagram of five pure lines of beans (A, B, C, D, and E)and a population formed by their union, A-E. II. Diagrams illustrating apure line of beans and two new biotypes derived from it. The upperdiagram indicates the original biotype; the second and third diagram in-dicate the elongated (narrower) and shorter (broader) type of beans. Xindicates the average class of the original biotype. (After Johannsen.) SECONDARY SEXUAL CHARACTERS 123 taken for granted that by selecting a particular kindof individual the species will move in the directionof selection. A few examples will bring the matter before us. Ifwe take a peck of beans and put all of those of one sizein one cylinder and those of other sizes in other cyl-inders, and place the cylinders in a row, we get a resultlike that in Fig. 61, A-E. If we imagine a line joining
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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjectsex, bookyear1913
