Evolution and the Genetics of Populations: Experimental results and evolutionary deductions |
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The controls were the same as for the homozygotes of table 11.10. The results
are shown in table 11.14. These heterozygotes were very significantly inferior to
the controls. Those of generation 32 should have been heterozygous in about the
...
The controls were the same as for the homozygotes of table 11.10. The results
are shown in table 11.14. These heterozygotes were very significantly inferior to
the controls. Those of generation 32 should have been heterozygous in about the
...
515 ページ
This is the same sort of selective modification of homozygotes implied by the form
of the dosage-response curve, but it would be more effective in increasing
dominance than I had supposed. I had envisioned only slight quantitative
variability in ...
This is the same sort of selective modification of homozygotes implied by the form
of the dosage-response curve, but it would be more effective in increasing
dominance than I had supposed. I had envisioned only slight quantitative
variability in ...
557 ページ
Also from the evolutionary standpoint, genes with favorable modifying effects on
the heterozygotes of a gene of major importance, which thereby tend to shift the
phenotype of the latter toward the favorable homozygote, may be expected to be
...
Also from the evolutionary standpoint, genes with favorable modifying effects on
the heterozygotes of a gene of major importance, which thereby tend to shift the
phenotype of the latter toward the favorable homozygote, may be expected to be
...
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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