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. |
Dall'interno del libro
Risultati 1-3 di 67
Pagina 198
... variance in viability . As larvae , these genotypes also differ in their tendency to avoid ethanol ( Cavener 1979 ) . Hence if there were fine - scaled variation in ethanol at the larval feeding sites , the variance in viability would ...
... variance in viability . As larvae , these genotypes also differ in their tendency to avoid ethanol ( Cavener 1979 ) . Hence if there were fine - scaled variation in ethanol at the larval feeding sites , the variance in viability would ...
Pagina 200
... variance components ( Table II ) show an interesting regularity in that the proportion of the genetic variance that is nonadditive ( V1⁄2 + V1 ) is relatively greater in traits such as egg production that ought to be strongly correlated ...
... variance components ( Table II ) show an interesting regularity in that the proportion of the genetic variance that is nonadditive ( V1⁄2 + V1 ) is relatively greater in traits such as egg production that ought to be strongly correlated ...
Pagina 542
... variance can be written or - V = n1 ( X1 − x ) 2 + n2 ( X2 − x ) 2 + . . . + nk ( Xk − x ) 2 k = n Σfi ( X ; − x ) 2 - k V = ( Ź Six ? ) - -- Note that a variance is always positive ; that the farther an observation is from the mean ...
... variance can be written or - V = n1 ( X1 − x ) 2 + n2 ( X2 − x ) 2 + . . . + nk ( Xk − x ) 2 k = n Σfi ( X ; − x ) 2 - k V = ( Ź Six ? ) - -- Note that a variance is always positive ; that the farther an observation is from the mean ...
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