Evolutionary BiologySinauer Associates, 1986 - 600 pagine Covers the genetic, developmental, and ecological mechanisms of evolutionary change, the major features of evolutionary history as revealed by phylogenetic and paleontological studies, and material on adaptation, molecular evolution, co-evolution, and human evolution. |
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Risultati 1-3 di 70
Pagina 347
... extinctions per unit time must increase as the number of species already present rises . If rates of extinction ( E ) increase more rapidly with species number than do origination rates ( 0 ) , an equilibrium number of species ( S ) ...
... extinctions per unit time must increase as the number of species already present rises . If rates of extinction ( E ) increase more rapidly with species number than do origination rates ( 0 ) , an equilibrium number of species ( S ) ...
Pagina 361
... extinctions per million years are described by the solid regression line ; the regression line indicates an apparent decline in " back- ground " extinction rate per time . Circled points deviate significantly from this “ background ...
... extinctions per million years are described by the solid regression line ; the regression line indicates an apparent decline in " back- ground " extinction rate per time . Circled points deviate significantly from this “ background ...
Pagina 362
... extinction . If , for example , a common cause of extinction in the past has been the destruction of species ' habitats , the survival or extinction of a species may not depend on intricate adaptations , efficiency , competitive ability ...
... extinction . If , for example , a common cause of extinction in the past has been the destruction of species ' habitats , the survival or extinction of a species may not depend on intricate adaptations , efficiency , competitive ability ...
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adaptive adaptive radiation allele frequency allozyme Amer amino acid ancestor animals average behavior biological birds bristle number caused cells Chapter characters chromosome cladistic coefficient coevolution competition copies correlated deleterious developmental differentiation distribution divergence Dobzhansky Drosophila melanogaster ecological effect environment environmental enzyme equilibrium evidence evolutionary change evolved example extinction rate factors favor females Figure fitness fossil record function Futuyma gametes gene conversion gene flow gene frequencies genetic drift genetic variation genome genotypes geographic groups habitats heritability heterozygotes heterozygous higher taxa homozygotes homozygous host human hybrid inbreeding increase individual insects interactions Lewontin linkage disequilibrium loci locus males mammals mating mechanisms molecular morphological mutation natural selection nucleotide occur offspring organisms pairs parasites pattern phenotype phylogenetic phylogeny plants polymorphism predators prey proteins pseudogenes random recombination relative reproductive isolation sequence sexual similar speciation structure survival sympatric taxon theory tion trait transposable elements variable variance