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 164
E Selection in Favor of Heterozygotes Let the genotypic frequencies and fitnesses at a locus be Genotype Frequency Fitness AA pa 1 - S AA ' 2pg 1 A'A ' q ? 1 - t The change in allele frequency per generation is Aq = q ' – 9 pq + ( 1 – t ) ...
E Selection in Favor of Heterozygotes Let the genotypic frequencies and fitnesses at a locus be Genotype Frequency Fitness AA pa 1 - S AA ' 2pg 1 A'A ' q ? 1 - t The change in allele frequency per generation is Aq = q ' – 9 pq + ( 1 – t ) ...
Pagina 188
DIRECTIONAL SELECTION AT TWO LOCI As the previous example implies , selection at one locus can change the frequencies of alleles at a linked locus , if there is initial linkage disequilibrium between them . This effect , often termed ...
DIRECTIONAL SELECTION AT TWO LOCI As the previous example implies , selection at one locus can change the frequencies of alleles at a linked locus , if there is initial linkage disequilibrium between them . This effect , often termed ...
Pagina 227
hybridizing populations will remain differentiated throughout the genome only if the chromosomes are thickly studded with loci that , like our hypothetical locus A , reduce hybrid fitness , for it is only then that most genes will be ...
hybridizing populations will remain differentiated throughout the genome only if the chromosomes are thickly studded with loci that , like our hypothetical locus A , reduce hybrid fitness , for it is only then that most genes will be ...
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Sommario
CONCEPTIONS AND MISCONCEPTIONS | 7 |
ADAPTATION AND ENVIRONMENT | 19 |
COMPLEX INTERACTIONS AMONG SPECIES | 34 |
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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 differentiation 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
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 |