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 |
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Página ix
... causes of variation , 154 , 156 ; Variation as related to amphimixis and parthenogenesis as mutations of de Vries , 154 . CHAPTER X. - HEREDITY . Hereditary variancy defined , 163 ; Atavism or reversion , 166 ; Telogony , 166 ; Prenatal ...
... causes of variation , 154 , 156 ; Variation as related to amphimixis and parthenogenesis as mutations of de Vries , 154 . CHAPTER X. - HEREDITY . Hereditary variancy defined , 163 ; Atavism or reversion , 166 ; Telogony , 166 ; Prenatal ...
Página x
... cause of malarial fevers , 351 ; Tapeworm and other flat worms , 354 ; Trichina and other round worms , 355 ... causes of degeneration , 366 ; Ad- vantages and disadvantages of parasitism and degeneration , 367 . CHAPTER XVIII ...
... cause of malarial fevers , 351 ; Tapeworm and other flat worms , 354 ; Trichina and other round worms , 355 ... causes of degeneration , 366 ; Ad- vantages and disadvantages of parasitism and degeneration , 367 . CHAPTER XVIII ...
Página 4
... causes alone . Among these proximate causes are differences in structure and in degrees of adaptability among individuals , the operation of the rule of the survival of the best adapted , the inheritance by individuals of the traits of ...
... causes alone . Among these proximate causes are differences in structure and in degrees of adaptability among individuals , the operation of the rule of the survival of the best adapted , the inheritance by individuals of the traits of ...
Página 5
... cause its equator to differ from its poles . A single homogeneous form of life on this earth could not remain uniform because it would be thrown under varying conditions . It could not be the same under the tropical sun as under the ...
... cause its equator to differ from its poles . A single homogeneous form of life on this earth could not remain uniform because it would be thrown under varying conditions . It could not be the same under the tropical sun as under the ...
Página 6
... causes . The evo- lution of the face of the earth forces parallel changes in organic life , but the causes of change in the two cases are in no respect the same . The forces or processes by which mountains are built or continents ...
... causes . The evo- lution of the face of the earth forces parallel changes in organic life , but the causes of change in the two cases are in no respect the same . The forces or processes by which mountains are built or continents ...
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