DeVries and Johannsen have thought, but may be genetic also. Hence racial changes may be effected through selection by the isolation of genetic fluctuations, as well as by the isolation of mutations. Moreover, genetic fluctuation makes possible progressive... Studies of inheritance in guinea-pigs and rats - 168 ページWilliam Ernest Castle 著 - 1916 - 192 ページ全文表示 - この書籍について
| 1917 - 782 ページ
...(first F,) grandparent, they show a correlation between grade of grandparent and grade of grandchild. The lower-grade grandparent has lower-grade hooded...would be quite hopeless to seek by any other means. 2. The progeny of "mutant" crossed ivith wild rats. (Prom Publication 241, p. 173.) Castle and Phillips... | |
| 1917 - 806 ページ
...fluctuates in genetic value. Fluctuation accordingly is not exclusively phenotypic, as DeVries and Johaunsen have thought, but may be genetic also. Hence racial...would be quite hopeless to seek by any other means. 2. The progeny of "mutant" crossed with wild rats. Publication 241, p. 173.) (From Castle and Phillips... | |
| 1919 - 768 ページ
...concemed fluctuates in genetic value. Fluctuation accordingly is not exclusively phaenotypic, as de Vries and Johannsen have thought, but may be genetic also....selection by the isolation of genetic fluctuations, als well as by the isolation of mutations. Moreover genetic fluctuation makes possible progressive... | |
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