Evolutionary BiologyFutuyma (ecology and evolution, SUNY Stony Brook) covers such subject areas as phylogeny, paleobiology, genetic mechanisms of change and speciation, character evolution, the theory of processes and macroevolution, and new molecular perspectives. Numerous line drawings, charts, diagrams, and maps are provided. Annotation copyrighted by Book News, Inc., Portland, OR |
Dall'interno del libro
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Pagina 52
To take into account other environmental factors , we would have to draw many more axes ; although we cannot do this , we can more or less conceive of doing it . We thus have an n - dimensional space , with one axis for each of n ...
To take into account other environmental factors , we would have to draw many more axes ; although we cannot do this , we can more or less conceive of doing it . We thus have an n - dimensional space , with one axis for each of n ...
Pagina 60
ment , the density attained when population growth is stopped by limiting factors , whatever they may be . “ The causes which check the natural tendency of each species to increase are most obscure , ” Darwin said , and they still are .
ment , the density attained when population growth is stopped by limiting factors , whatever they may be . “ The causes which check the natural tendency of each species to increase are most obscure , ” Darwin said , and they still are .
Pagina 73
What factors limit the geographic range of a species ? Over a geographic transect the environment usually changes gradually , but the edge of a species ' range is often abrupt . Why ? Why should it be incapable of adapting enough to ...
What factors limit the geographic range of a species ? Over a geographic transect the environment usually changes gradually , but the edge of a species ' range is often abrupt . Why ? Why should it be incapable of adapting enough to ...
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Sommario
The Origin and Impact of Evolutionary Thought | 3 |
A Synopsis of Evolutionary Theory | 19 |
Heredity and Development | 33 |
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adaptive advantageous alleles alterations ancestor appear arise associated average become behavior biological birds body bristle cause cent Chapter character characteristics chromosome common complex consists depends derived determined developmental differentiation direction Discuss distribution diversity dominant drift Drosophila ecological effect environment environmental enzyme equal equilibrium evidence evolution evolutionary evolved example exist extinction factors females Figure fitness fossil function gene flow gene frequency genetic genetic variation genotypes geographic greater growth heterozygotes higher highly human hybrid important increase individuals insects instances interactions isolated kinds less loci locus major males mating mean mechanisms mutation natural selection occur offspring organisms origin patterns phenotypic plants Pleistocene polymorphic population possible predators present probability produce proportion recombination relative reproduction response sexual similar single speciation species structure suggests theory tion variance vary