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 viii
... existence , 60 ; Discriminate death , 61 ; Natural selection , 62 ; Interdependence of species , 63 ; Animal and plant invasions , 64 ; Doctrine of Malthus , 67 ; Limits to the capacity of natural selection , 68 ; Survival of the ...
... existence , 60 ; Discriminate death , 61 ; Natural selection , 62 ; Interdependence of species , 63 ; Animal and plant invasions , 64 ; Doctrine of Malthus , 67 ; Limits to the capacity of natural selection , 68 ; Survival of the ...
Página 2
... existence . The word evolution has been fre- quently applied to the process of growth and maturity of the individual animal or plant , and again to the process of deriva- tion of species from ancestral organisms , and again to the pro ...
... existence . The word evolution has been fre- quently applied to the process of growth and maturity of the individual animal or plant , and again to the process of deriva- tion of species from ancestral organisms , and again to the pro ...
Página 3
... existence as the " physical basis of heredity " is now well established . In a later chapter we shall discuss the nature of this physical basis , the structures within the nucleus of the germ cell which control or preside over the ...
... existence as the " physical basis of heredity " is now well established . In a later chapter we shall discuss the nature of this physical basis , the structures within the nucleus of the germ cell which control or preside over the ...
Página 4
... existence . The fact of descent with modification large or small is a matter of common knowledge in the biology of to - day , veri- fied in the hundreds of thousands of species of organisms now known and classified . To call this ...
... existence . The fact of descent with modification large or small is a matter of common knowledge in the biology of to - day , veri- fied in the hundreds of thousands of species of organisms now known and classified . To call this ...
Página 11
... existence between individuals and between species , whereby those best adapted to their surroundings live and reproduce their kind . This theory is now the central axis of all biological investi- gation in all its branches , from ethics ...
... existence between individuals and between species , whereby those best adapted to their surroundings live and reproduce their kind . This theory is now the central axis of all biological investi- gation in all its branches , from ethics ...
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