Evolutionary biology |
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Pagina 289
For example, among the archosaurian reptiles that included the crocodilians and
the dinosaurs, one lineage diverged dramatically and gave rise to birds (Figure 3
). These are accorded their own class, Aves, because they are so different from ...
For example, among the archosaurian reptiles that included the crocodilians and
the dinosaurs, one lineage diverged dramatically and gave rise to birds (Figure 3
). These are accorded their own class, Aves, because they are so different from ...
Pagina 299
To use an absurd example, birds appear earlier in the fossil record (Jurassic)
than do snakes (Cretaceous), but this does not mean that all the features of birds
are more primitive than those of snakes, nor that snakes are descended from
birds.
To use an absurd example, birds appear earlier in the fossil record (Jurassic)
than do snakes (Cretaceous), but this does not mean that all the features of birds
are more primitive than those of snakes, nor that snakes are descended from
birds.
Pagina 336
Archaeopteryx lithographica, from the mid-Jurassic, is the earliest known bird (
Figure 13). Except for its feathers and a few osteological features, it has none of
the anatomical peculiarities that typify later birds. It shares numerous synapo- ...
Archaeopteryx lithographica, from the mid-Jurassic, is the earliest known bird (
Figure 13). Except for its feathers and a few osteological features, it has none of
the anatomical peculiarities that typify later birds. It shares numerous synapo- ...
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Sommario
CONCEPTIONS AND MISCONCEPTIONS | 7 |
EVOLUTION SINCE THE SYNTHESIS | 13 |
ADAPTATION AND ENVIRONMENT | 19 |
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adaptive adaptive radiation allele frequency allozyme amino acid ancestor average become behavior biological birds bristle number Chapter character chromosome cladistic coefficient coevolution competition correlation Cretaceous deleterious developmental differentiation distribution diversity Drosophila Drosophila melanogaster ecological effect environment environmental enzyme equilibrium evidence evolutionary change evolved example extinction rates favor females Figure fitness fossil record function gametes gene conversion gene flow genetic drift genetic variation genome genotypes geographic groups habitats heritability heterozygotes heterozygous higher taxa homozygotes homozygous host human hybrid inbreeding individual insects interactions Lewontin lineage linkage disequilibrium loci locus males mammals mating mean molecular morphological mutation natural selection neoteny nucleotide occur offspring organisms parasites pattern phenotype phylogenetic phylogeny plants polymorphism population predators prey proteins pseudogenes rate of evolution recombination region related species relative reproductive isolation sequence sexual similar South America speciation structure survival sympatric taxa taxon theory tion trait transposable elements variance
Informazioni bibliografiche
| Titolo | Evolutionary biology |
| Autore | Douglas J. Futuyma |
| Edizione | 2, illustrata |
| Editore | Sinauer Associates, 1986 |
| Provenienza dell'originale | la University of Michigan |
| Digitalizzato | 27 gen 2010 |
| ISBN | 0878931880, 9780878931880 |
| Lunghezza | 600 pagine |
| Esporta citazione | BiBTeX EndNote RefMan |