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 299
Fossils can provide corroboration of relationships : for example , reptiles appear
before mammals , and there are numerous intermediates between the two
groups . But relationships cannot be inferred solely from temporal sequences of
fossils ...
Fossils can provide corroboration of relationships : for example , reptiles appear
before mammals , and there are numerous intermediates between the two
groups . But relationships cannot be inferred solely from temporal sequences of
fossils ...
Pagina 320
Millions of years from start to present Era Period Epoch Major events Quaternary
0 . 01 ) Recent ( Holocene ) Pleistocene Repeated glaciations ; extinctions of
large mammals ; evolution of Homo ; rise of civilizations 2 . 0 CENOZOIC Tertiary
5 .
Millions of years from start to present Era Period Epoch Major events Quaternary
0 . 01 ) Recent ( Holocene ) Pleistocene Repeated glaciations ; extinctions of
large mammals ; evolution of Homo ; rise of civilizations 2 . 0 CENOZOIC Tertiary
5 .
Pagina 334
Late in the Triassic , at about the same time as the first dinosaurs evolved , some
of the therapsids — the mammal - like reptiles that had arisen in the Permian -
approached the mammalian condition so closely that some of them are
considered ...
Late in the Triassic , at about the same time as the first dinosaurs evolved , some
of the therapsids — the mammal - like reptiles that had arisen in the Permian -
approached the mammalian condition so closely that some of them are
considered ...
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Sommario
CONCEPTIONS AND MISCONCEPTIONS | 7 |
Chapter | 18 |
THE EFFECT OF DENSITY | 24 |
Copyright | |
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Parole e frasi comuni
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