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 / 2N + ( 1 1 / 2N ) Ft - 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 ( 1 ...
... genes are identical by descent is - F = [ 1 / 2N + ( 1 1 / 2N ) Ft - 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 ( 1 ...
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 ...
Sommario
CONCEPTIONS AND MISCONCEPTIONS | 7 |
EVOLUTION SINCE THE SYNTHESIS | 13 |
ADAPTATION AND ENVIRONMENT | 19 |
Copyright | |
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adaptive advantage allele allele frequency animals appear arise associated average become behavior biological cause cells Chapter characteristics characters chromosome common competition condition conversion copies correlation depends determined developmental differentiation distribution divergence Drosophila ecological effect elements environment enzyme equilibrium evidence evolution evolutionary evolved example exist expression extinction factors Figure fitness fossil frequency function gene genetic genetic drift genome genotypes geographic greater groups growth higher host human hybrid important increase individual insects interactions isolation less linkage loci locus lower major males mating mean mechanisms morphological mutation natural selection occur organisms origin pairs pattern phenotypic plants Pleistocene polymorphism population possible predators Press probability proteins reduced region relationships relative represent reproductive response sequence similar single speciation species structure taxa term theory tion traits variance variation vary