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 84
If a locus is sex - linked rather than autosomal , two - thirds of the genes in a
population with a 1 : 1 sex ratio are carried by the ... The extension of the Hardy -
Weinberg theorem to two ( or more ) loci is complicated , but it is very important .
If a locus is sex - linked rather than autosomal , two - thirds of the genes in a
population with a 1 : 1 sex ratio are carried by the ... The extension of the Hardy -
Weinberg theorem to two ( or more ) loci is complicated , but it is very important .
Pagina 164
E Selection in Favor of Heterozygotes Let the genotypic frequencies and
fitnesses at a locus be Genotype AA AA ' A ' A ' Frequency p ? 2pq q ? Fitness 1 -
5 1 1 - 1 The change in allele frequency per generation is pq + ( 1 – t ) g ? Aq = q '
– 9 ...
E Selection in Favor of Heterozygotes Let the genotypic frequencies and
fitnesses at a locus be Genotype AA AA ' A ' A ' Frequency p ? 2pq q ? Fitness 1 -
5 1 1 - 1 The change in allele frequency per generation is pq + ( 1 – t ) g ? Aq = q '
– 9 ...
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 closely linked to ...
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 closely linked to ...
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Sommario
CONCEPTIONS AND MISCONCEPTIONS | 7 |
Chapter | 18 |
THE EFFECT OF DENSITY | 24 |
Copyright | |
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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 differentiated 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