. Botany for agricultural students . Botany. GREGOR MENDEL 539 dividuals differing in heritage, and not much can be determined concerning the laws of heredity from such a mixture. The average means nothing unless the individuals measured or counted are alike in their heritage, and the only way to be sure that the individuals of a mass or population are homogeneous in constitution is to pedigree them, that is, grow them all from a common stock. The importance of pedigree cultures is well shown in Mendel's work. Gregor Mendel. — Gregor Mendel (1822-1884) {Fig. 474), was an Austrian monk and abbo
. Botany for agricultural students . Botany. GREGOR MENDEL 539 dividuals differing in heritage, and not much can be determined concerning the laws of heredity from such a mixture. The average means nothing unless the individuals measured or counted are alike in their heritage, and the only way to be sure that the individuals of a mass or population are homogeneous in constitution is to pedigree them, that is, grow them all from a common stock. The importance of pedigree cultures is well shown in Mendel's work. Gregor Mendel. — Gregor Mendel (1822-1884) {Fig. 474), was an Austrian monk and abbott in the monastery of Briinn, where he conducted his ex- periments in the Cloister Garden. He loved plants and loved to experiment with them. Although he studied heredity only as a pastime, his laws of heredity and his experimental method of in- vestigating them are two of the most important contribu- tions ever made to biological science. Mendel's success was due to the clearness with which he thought out the problem. He knew the works of other in- vestigators of heredity, and attributed their failure to reach definite conclusions to a want of precise and con- tinued analysis. To obtain definite results he saw that it was necessary to start with pure material, to consider each character separately, and to keep the different generations distinctly separate. He also realized that the progeny of each individual must be recorded separately. Such ideas were new in Mendel's time, but he felt certain that experiments carried on in this systematic way would give regu- lar results and lead to definite conclusions. Mendel saw that most could be accomplished by crossing plants of different varieties or species and observing the be-. FiG. 474. — Gregor Mendel, whose theory of inheritance is the most im- portant contribution ever made to our knowledge of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabilit
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1919
