 ... identity of its own. Although in its young stages it may be indistinguishable from some other kind of animal in similar stages, it is sure to come out, when fully developed, an individual of the same kind as its parents were or are. The young fish...  Animals: A Text-book of Zoology - Página 88por David Starr Jordan, Vernon Lyman Kellogg, Harold Heath - 1905Visualização integral - Acerca deste livro
 | David Starr Jordan - 1900 - 358 páginas
...parents were or are. The young fish and the young salamander in the upper row in Fig. 41 seem very much alike, but one embryo is sure to develop into a fish...individual of a certain kind is called the law of heredity. 55. The significance of the facts of development. — The significance of the developmental phenomena... | |
 | David Starr Jordan, Vernon Lyman Kellogg, Harold Heath - 1903 - 480 páginas
...kind as its parents were or are. The young fish and the young salamander in the upper row in Fig. 145 are indistinguishably alike, but one embryo is sure...for the greater difference is included in the less. 240. The significance of the facts of development.— The significance of the developmental phenomena... | |
 | David Starr Jordan, Vernon Lyman Kellogg, Harold Heath - 1903 - 482 páginas
...the young salamander in the upper row in Fig. 145 seem very much alike, but one embryo is sure to 264 develop into a fish and the other into a salamander....individual of a certain kind is called the law of heredity. 240. The significance of the facts of development. — The significance of the developmental phenomena... | |
 | Frederick Elmer Bolton - 1910 - 810 páginas
...an individual of the same kind as its parents were or are. The young fish and the young salamander are indistinguishably alike, but one embryo is sure...to become an individual of a certain kind is called th& law of heredity." This is the great conservative force i1i nature. Through heredity evolution is... | |
 | Frederick Elmer Bolton - 1910 - 816 páginas
...alike, but one embryo is sure to develop into a fbli and the other into a salamander. Tlr's certa;"(y of an embryo to become an individual of a certain kind is called the law of heredity." This is the great conservative force in nature. Through heredity evolution is also made po.-. "jlo,"... | |
 | 1921 - 560 páginas
...were or are. A very young fish and a very young salamander are almost indistinguishably alike, but one is sure to develop into a fish and the other into...for the greater difference is included in the less. fundamental features at least, the structural condition of the animal's ancestors. Naturalists believe... | |
 | Charles Spurgeon Knight - 1925 - 270 páginas
...transmission to offspring, is contained in the germ cell. It is therefore called the bearer of the heritage. Viewed in the light of development, there must be...for the greater difference is included in the less. No two plants or animals are ever exactly alike. The leaves on a tree differ in the number of ribs,... | |
 | Frederick Elmer Bolton - 1923 - 466 páginas
...individual of the same kind as its parents were or are. The young fish and the young salamander . . . are indistinguishably alike, but one embryo is sure...individual of a certain kind is called the law of heredity. This is the great conservative force in nature. Through heredity evolution is made possible, since... | |
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