Evolutionary biology |
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Pagina 160
Selection and recurrent mutation If a deleterious allele arises repeatedly by
mutation at a rate u, its frequency will ultimately reach an equilibrium between
input from mutation and loss by selection. For example, the equilibrium frequency
of a ...
Selection and recurrent mutation If a deleterious allele arises repeatedly by
mutation at a rate u, its frequency will ultimately reach an equilibrium between
input from mutation and loss by selection. For example, the equilibrium frequency
of a ...
Pagina 171
The stable equilibria are at q = 0 (where w = 1 + si) and at q = 1 (where w = 1 + s2
). Average fitness is greater at either of these monomorphic equilibria than at
intermediate allele frequencies. However, the average fitness will be higher at
one ...
The stable equilibria are at q = 0 (where w = 1 + si) and at q = 1 (where w = 1 + s2
). Average fitness is greater at either of these monomorphic equilibria than at
intermediate allele frequencies. However, the average fitness will be higher at
one ...
Pagina 470
If n sites freely recombine, fixation requires that n independent loci be fixed for
the same sequence, which is clearly less likely. By these same lines of reasoning
, it can be shown that the rate at which equilibrium is attained generally increases
...
If n sites freely recombine, fixation requires that n independent loci be fixed for
the same sequence, which is clearly less likely. By these same lines of reasoning
, it can be shown that the rate at which equilibrium is attained generally increases
...
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Sommario
CONCEPTIONS AND MISCONCEPTIONS | 7 |
EVOLUTION SINCE THE SYNTHESIS | 13 |
ADAPTATION AND ENVIRONMENT | 19 |
Copyright | |
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Parole e frasi comuni
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 |