BACKGROUND FOR MAN |
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Σελίδα 15
... selection is over-all and even in a figurative sense the outcome of struggle is quite unjustified under the modern understanding of the process. Struggle is sometimes involved, but it usually is not, and when it is, it may even work ...
... selection is over-all and even in a figurative sense the outcome of struggle is quite unjustified under the modern understanding of the process. Struggle is sometimes involved, but it usually is not, and when it is, it may even work ...
Σελίδα 16
... selection was admitted, as it must be, but it was maintained that this role was merely the elimination of some individuals or types of organisms: the "unfit." Such negative action seemed to have no particular bearing on the origin of ...
... selection was admitted, as it must be, but it was maintained that this role was merely the elimination of some individuals or types of organisms: the "unfit." Such negative action seemed to have no particular bearing on the origin of ...
Σελίδα 19
... selection for or against, although the chances are very rarely quite 100 per cent or 0. For a given intensity of selection, these chances tend to vary with size of the breeding population. The exact relationships are, again, rather ...
... selection for or against, although the chances are very rarely quite 100 per cent or 0. For a given intensity of selection, these chances tend to vary with size of the breeding population. The exact relationships are, again, rather ...
Περιεχόμενα
GEORGE GAYLORD SIMPSON | 7 |
ERNST MAYR | 26 |
ALFRED SHERWOOD ROMER | 37 |
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adaptation adult albumin allele frequencies anatomy ancestors animals appear areas Australopithecus Australopithecus africanus baboons biology bones brachiating brain Caucasoids chimpanzee complex concerned cultural DeVore dominance early environment evidence evolutionary evolved example existence females field studies Figure forms functions gelada genes genetic genotypes genus Homo gorilla habitats hamadryas hamadryas baboons heterosis hominid Homo erectus Homo habilis human evolution hunting important individual involved isolation knuckle-walking lineage living loci major males mammals Middle Pleistocene million miscegenation modern monkeys and apes morphological mutations nature negroes nonhuman primates observed Olduvai one-male groups original Paranthropus patterns physical pongids population possible Primate Behavior primates probably problem prosimians races racial range relationships relatively represent result rhesus sample sapiens selection similar single skull social behavior social group social organization species specimens Sterkfontein stimulation structure suggests Swartkrans taxa taxon taxonomic tool-using traits variability variation vertebrate