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
... Reproduction by multiplication , 59 ; Numbers of individuals al- most stationary , 60 ; Struggle for existence , 60 ; Discriminate death , 61 ; Natural selection , 62 ; Interdependence of species , 63 ; Animal and plant invasions , 64 ...
... Reproduction by multiplication , 59 ; Numbers of individuals al- most stationary , 60 ; Struggle for existence , 60 ; Discriminate death , 61 ; Natural selection , 62 ; Interdependence of species , 63 ; Animal and plant invasions , 64 ...
Página ix
... reproductive cells , 217 ; Simplest many- celled animals , 218 ; Effects of sex , 220 ; Sex dimorphism , 221 ; The ... Reproduction in protozoa , 260 ; Maturation , 264 ; Fertilization , 267 ; Cleavage , 269 ; Reduction of the chromo ...
... reproductive cells , 217 ; Simplest many- celled animals , 218 ; Effects of sex , 220 ; Sex dimorphism , 221 ; The ... Reproduction in protozoa , 260 ; Maturation , 264 ; Fertilization , 267 ; Cleavage , 269 ; Reduction of the chromo ...
Página xi
... reproduction , 439 ; In- stincts concerned with the care of the young , 439 ; Variability of instinct , 442 ; Reason , 443 ; Mind , 448 . L CHAPTER XXI . - MAN'S PLACE IN NATURE . Post - Darwinian conception of humanity , 452 ; Man's ...
... reproduction , 439 ; In- stincts concerned with the care of the young , 439 ; Variability of instinct , 442 ; Reason , 443 ; Mind , 448 . L CHAPTER XXI . - MAN'S PLACE IN NATURE . Post - Darwinian conception of humanity , 452 ; Man's ...
Página 5
... reproduce individuals likewise adapted . There must , then , exist in all things a " tendency " to become special- ized and differentiated . In accordance with this tendency , it is conceived that nebulous masses have been concentrated ...
... reproduce individuals likewise adapted . There must , then , exist in all things a " tendency " to become special- ized and differentiated . In accordance with this tendency , it is conceived that nebulous masses have been concentrated ...
Página 11
... reproduce their kind . This theory is now the central axis of all biological investi- gation in all its branches , from ethics to histology , from anthro- pology to bacteriology . In the light of this theory every peculiarity of ...
... reproduce their kind . This theory is now the central axis of all biological investi- gation in all its branches , from ethics to histology , from anthro- pology to bacteriology . In the light of this theory every peculiarity of ...
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