Evolution and animal life, an elementary discussion of facts, processes, laws and theories relating to the life and evolution of animalsD. Appleton, 1908 - 489 páginas |
No interior do livro
Resultados 1-5 de 29
Página 53
... offspring of any individual will be much more like other individuals of the species to which the parent belongs than like individuals of other species , and also , in the main , more like the parent than like other indi- viduals of the ...
... offspring of any individual will be much more like other individuals of the species to which the parent belongs than like individuals of other species , and also , in the main , more like the parent than like other indi- viduals of the ...
Página 54
... offspring may show a blend of the different characters of the parents , or a mosaic of them , or may show the characters of either one alone , or , indeed , characters of wholly new type . The important thing is , however , that there ...
... offspring may show a blend of the different characters of the parents , or a mosaic of them , or may show the characters of either one alone , or , indeed , characters of wholly new type . The important thing is , however , that there ...
Página 55
... offspring , nor indeed to any future generations of the line . And the general answer to the natural query raised by this condition is that variations which are congenital or blastogenic , that is , are determined at birth for it ...
... offspring , nor indeed to any future generations of the line . And the general answer to the natural query raised by this condition is that variations which are congenital or blastogenic , that is , are determined at birth for it ...
Página 56
... offspring . And there are to - day many Lamarckian evolu- tionists . So that in our list of possible evolution factors the so - called Lamarckian factor should not be omitted . And in connection with it may be considered , by and large ...
... offspring . And there are to - day many Lamarckian evolu- tionists . So that in our list of possible evolution factors the so - called Lamarckian factor should not be omitted . And in connection with it may be considered , by and large ...
Página 59
... offspring of a single pair . It takes about one hundred of these salmon to weigh a ton . Could all these fishes develop , in a very short time there would be no room for them in all the rivers of the North , nor in all the waters of the ...
... offspring of a single pair . It takes about one hundred of these salmon to weigh a ton . Could all these fishes develop , in a very short time there would be no room for them in all the rivers of the North , nor in all the waters of the ...
Outras edições - Ver tudo
Evolution and Animal Life: An Elementary Discussion of Facts, Processes ... David Starr Jordan,Vernon Lyman Kellogg Visualização integral - 1907 |
Evolution and Animal Life: An Elementary Discussion of Facts, Processes ... David Starr Jordan,Vernon Lyman Kellogg Visualização integral - 1907 |
Evolution and animal life, an elementary discussion of facts, processes ... David Starr Jordan,Vernon Lyman Kellogg Visualização integral - 1907 |
Palavras e frases frequentes
actual adaptation adult animals animals and plants ants apes appear artificial selection bees beetles biologists birds body breeding butterfly called causes centrosome changes CHAPTER characters chromatin chromosomes color and pattern common crab Darwin degeneration degree descent differentiation division egg cell embryo environment existence fact factors fauna female fertilized fishes forms fossils genus germ cells habit hatched heredity honeybee host hybrid individuals influence inheritance insects instinct islands isolation kinds of animals known larva larvæ live lower male mammals matter ment modified mutations natural selection naturalists nest nucleus offspring organic evolution origin Origin of Species parasites parent phenomena plasm primitive produced protoplasm Protozoa race relation reproduction reptiles resemblance Sacculina sea anemone sexual sexual selection sheep species species-forming sperm spines stage structure substance tail theory tion traits tree variation various vertebrates Weismann wings workers young