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. |
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Pagina 106
... segments , and a " capitulum factor " that expressed variation in the mouthparts and some of the leg segments . The body size factor varied clinally with latitude ; ticks are larger in the north . The capitulum factor 4.4 ° C 2.0 ° C ...
... segments , and a " capitulum factor " that expressed variation in the mouthparts and some of the leg segments . The body size factor varied clinally with latitude ; ticks are larger in the north . The capitulum factor 4.4 ° C 2.0 ° C ...
Pagina 432
... segments . Each secondary segment corresponds to parts of two primary segments . ( B ) Hypothesized evolution of the segmentation of insects ( 5 ) from a wormlike ancestor ( 1 ) , through intermediate steps resembling Onycho- phora ( 2 ) ...
... segments . Each secondary segment corresponds to parts of two primary segments . ( B ) Hypothesized evolution of the segmentation of insects ( 5 ) from a wormlike ancestor ( 1 ) , through intermediate steps resembling Onycho- phora ( 2 ) ...
Pagina 435
... segments , before it becomes capable of evolution in its own right . Thus the metathorax of a fly is homologous to that of a grasshopper , but it is not homologous to any specific segment in a millipede , in which no differentiation ...
... segments , before it becomes capable of evolution in its own right . Thus the metathorax of a fly is homologous to that of a grasshopper , but it is not homologous to any specific segment in a millipede , in which no differentiation ...
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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