Evolutionary BiologyCovers 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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Pagina 347
If rates of extinction ( E ) increase more rapidly with species number than do
origination rates ( O ) , an equilibrium number of species ( $ ) will exist when 0 =
E . Whether origination rates are constant ( 03 ) or decline as diversity increases (
01 ...
If rates of extinction ( E ) increase more rapidly with species number than do
origination rates ( O ) , an equilibrium number of species ( $ ) will exist when 0 =
E . Whether origination rates are constant ( 03 ) or decline as diversity increases (
01 ...
Pagina 351
Among classes of marine invertebrates , some , such as the starfish ( Stelleroidea
) , increased rapidly to a high level of diversity and maintained that level
thereafter ; some , such as trilobites ( Trilobita ) , rose to a peak and then
dwindled to ...
Among classes of marine invertebrates , some , such as the starfish ( Stelleroidea
) , increased rapidly to a high level of diversity and maintained that level
thereafter ; some , such as trilobites ( Trilobita ) , rose to a peak and then
dwindled to ...
Pagina 353
Time - - - - - - - - - - - - FIGURE 6 Phylogeny and temporal variation in diversity of
11 lineages ( clades ) generated on a computer by random speciations and
extinctions . The width of a bar reflects the number of species . Many of the
changes in ...
Time - - - - - - - - - - - - FIGURE 6 Phylogeny and temporal variation in diversity of
11 lineages ( clades ) generated on a computer by random speciations and
extinctions . The width of a bar reflects the number of species . Many of the
changes in ...
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Sommario
CONCEPTIONS AND MISCONCEPTIONS | 7 |
Chapter | 18 |
THE EFFECT OF DENSITY | 24 |
Copyright | |
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adaptive advantage allele frequency America animals appear arise average become behavior biological birds caused Chapter characteristics characters chromosomes common competition condition correlated depends derived determined differentiated direct distribution diversity Drosophila ecological effect environment enzyme equilibrium evidence evolution evolutionary evolved example exist extinction factors families favor females Figure fitness fossil function gene gene flow genetic drift genotypes geographic greater groups growth heterozygotes higher human hybrid important increase individual interactions isolation less linkage loci locus lower major males mammals mating mean mechanisms morphological mutation natural selection occur offspring organisms origin pairs pattern phenotype plants Pleistocene polymorphic population possible predators present probability recombination reduced region relative represent reproductive response sequence similar single sometimes speciation species structure taxa term theory tion trait usually variance variation vary