Evolutionary BiologySinauer Associates, 1986 - 600 pagine Covers 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 130
... DRIFT ( or just genetic drift ) . So far , we have considered the effects of genetic drift on the frequencies of different alleles that are NEUTRAL with respect to fitness - that is , we suppose that they do not differ at all in their ...
... DRIFT ( or just genetic drift ) . So far , we have considered the effects of genetic drift on the frequencies of different alleles that are NEUTRAL with respect to fitness - that is , we suppose that they do not differ at all in their ...
Pagina 134
... genes are identical by descent is F = [ 1 / 2Ne + ( 1 - 1 / 2Ne ) F , − 1 ] ( 1 − u ) 2 When the rate of loss of alleles by genetic drift is balanced by the gain of new alleles by mutation , F1 = F1 − 1 = Ê , and Ê is found to be Ê ...
... genes are identical by descent is F = [ 1 / 2Ne + ( 1 - 1 / 2Ne ) F , − 1 ] ( 1 − u ) 2 When the rate of loss of alleles by genetic drift is balanced by the gain of new alleles by mutation , F1 = F1 − 1 = Ê , and Ê is found to be Ê ...
Pagina 240
... genetic drift and selection together determine which of the novel recombinants persist , thus bringing the population to the vicinity of a different adaptive peak . Carson ( 1982 ) suggests that genes controlling mate recognition and ...
... genetic drift and selection together determine which of the novel recombinants persist , thus bringing the population to the vicinity of a different adaptive peak . Carson ( 1982 ) suggests that genes controlling mate recognition and ...
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adaptive adaptive radiation allele frequency allozyme Amer amino acid ancestor animals average behavior biological birds bristle number caused cells Chapter characters chromosome cladistic coefficient coevolution competition copies correlated deleterious developmental differentiation distribution divergence Dobzhansky Drosophila melanogaster ecological effect environment environmental enzyme equilibrium evidence evolutionary change evolved example extinction rate factors favor females Figure fitness fossil record function Futuyma gametes gene conversion gene flow gene frequencies genetic drift genetic variation genome genotypes geographic groups habitats heritability heterozygotes heterozygous higher taxa homozygotes homozygous host human hybrid inbreeding increase individual insects interactions Lewontin linkage disequilibrium loci locus males mammals mating mechanisms molecular morphological mutation natural selection nucleotide occur offspring organisms pairs parasites pattern phenotype phylogenetic phylogeny plants polymorphism predators prey proteins pseudogenes random recombination relative reproductive isolation sequence sexual similar speciation structure survival sympatric taxon theory tion trait transposable elements variable variance