Evolution and the Genetics of Populations: Experimental results and evolutionary deductions |
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The total from many loci, under the assumption that selection acts independently
on them, LT = 1 — exp ( — 2 A) is thus likely to be very nearly 1. It has often been
suggested that the reproductive surplus of species would be so depleted by the ...
The total from many loci, under the assumption that selection acts independently
on them, LT = 1 — exp ( — 2 A) is thus likely to be very nearly 1. It has often been
suggested that the reproductive surplus of species would be so depleted by the ...
491 ページ
Considerable heterallelism is thus likely to be maintained by recurrent mutation.
Prom another standpoint, assume that there are an even number of loci with
equivalent effects. The extreme deviations from the midpoint (with n/2 plus genes
) ...
Considerable heterallelism is thus likely to be maintained by recurrent mutation.
Prom another standpoint, assume that there are an even number of loci with
equivalent effects. The extreme deviations from the midpoint (with n/2 plus genes
) ...
561 ページ
order of magnitude of the number of loci in higher organisms. In those organisms
that have been studied most extensively, such as Drosophila species and maize,
the continual recurrence of mutations at the same loci indicates that the number ...
order of magnitude of the number of loci in higher organisms. In those organisms
that have been studied most extensively, such as Drosophila species and maize,
the continual recurrence of mutations at the same loci indicates that the number ...
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多く使われている語句
alleles average breed cage chaetae chapter characters chromosomes coefficient components correlation crossbreds crosses decline degree of dominance differentiation diploids directional selection disruptive selection Drosophila effects environmental equilibrium estimates evolution expected experiments factors favorable females fixation flies foundation stock gene frequencies GENERAT1ONS genetic variance genotypes guinea pigs heritability heterallelic heterosis heterotic heterozygotes heterozygous homozygotes homozygous hypothesis inbred lines inbred strains inbreeding depression increase indicated interaction systems less lethal litter load loci locus maize males mass selection mean selective value melanogaster mice minus selection modifiers mutation rate natural selection Nettlebed nongenetic observed offspring otocephaly overdominance pairs parents percentage phenotypic population probably production quantitative variability random bred random mating ratio recessive relative respect segregation selective peak semidominant showed sib mating significant species strain 35 studied tests threshold tion viability weight wild-type zygotes