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 52
Pagina 124
... Inbreeding causes a decline in the mean phenotype if individuals with the greatest value of the trait are dominant homozygotes or are heterozygotes . ( If heterozygotes have the greatest value , the locus is said to be OVERDOMINANT ) ...
... Inbreeding causes a decline in the mean phenotype if individuals with the greatest value of the trait are dominant homozygotes or are heterozygotes . ( If heterozygotes have the greatest value , the locus is said to be OVERDOMINANT ) ...
Pagina 125
... inbreeding does not change the mean . If A is dominant or overdominant ( d > 0 ) , the mean declines linearly with the degree of inbreeding ( this is called inbreeding depression ) . Now consider the effect of inbreeding on the variance ...
... inbreeding does not change the mean . If A is dominant or overdominant ( d > 0 ) , the mean declines linearly with the degree of inbreeding ( this is called inbreeding depression ) . Now consider the effect of inbreeding on the variance ...
Pagina 127
... INBRED POPULATIONS Numerous investigators have used genotype frequencies at enzyme loci to esti- mate the inbreeding coefficient in plant populations . As theory predicts , the frequency of heterozygotes is reduced in self - fertilizing ...
... INBRED POPULATIONS Numerous investigators have used genotype frequencies at enzyme loci to esti- mate the inbreeding coefficient in plant populations . As theory predicts , the frequency of heterozygotes is reduced in self - fertilizing ...
Altre edizioni - Visualizza tutto
Parole e frasi comuni
adaptive adaptive radiation allele frequency allozyme Amer amino acid ancestor animals average behavior biological birds bristle number caused cells Chapter characters chromosome cladistic coefficient coevolution competition copies correlated deleterious developmental differentiation distribution divergence Dobzhansky Drosophila melanogaster ecological effect environment environmental enzyme equilibrium evidence evolutionary change evolved example extinction rate factors favor females Figure fitness fossil record function Futuyma gametes gene conversion gene flow gene frequencies genetic drift genetic variation genome genotypes geographic groups habitats heritability heterozygotes heterozygous higher taxa homozygotes homozygous host human hybrid inbreeding increase individual insects interactions Lewontin linkage disequilibrium loci locus males mammals mating mechanisms molecular morphological mutation natural selection nucleotide occur offspring organisms pairs parasites pattern phenotype phylogenetic phylogeny plants polymorphism predators prey proteins pseudogenes random recombination relative reproductive isolation sequence sexual similar speciation structure survival sympatric taxon theory tion trait transposable elements variable variance