Evolutionary BiologyFutuyma (ecology and evolution, SUNY Stony Brook) covers such subject areas as phylogeny, paleobiology, genetic mechanisms of change and speciation, character evolution, the theory of processes and macroevolution, and new molecular perspectives. Numerous line drawings, charts, diagrams, and maps are provided. Annotation copyrighted by Book News, Inc., Portland, OR |
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Pagina 129
If several proteins are considered together , the variations balance out , so that the overall rate at which mammals have diverged in amino acid sequence appears quite constant and quite uniform among groups . There appear to be some ...
If several proteins are considered together , the variations balance out , so that the overall rate at which mammals have diverged in amino acid sequence appears quite constant and quite uniform among groups . There appear to be some ...
Pagina 201
Thus , unlike the grackles , in which different characters vary concordantly , the characteristics of the rat snakes appear to have differentiated independently , perhaps in response to different environmental factors .
Thus , unlike the grackles , in which different characters vary concordantly , the characteristics of the rat snakes appear to have differentiated independently , perhaps in response to different environmental factors .
Pagina 212
Almost every individual carries abnormal genes . This also appears to be the case in corn ( Crumpacker 1967 ) and Douglas fir ( Sorensen 1969 ) and probably in human populations as well ( 212 CHAPTER NINE.
Almost every individual carries abnormal genes . This also appears to be the case in corn ( Crumpacker 1967 ) and Douglas fir ( Sorensen 1969 ) and probably in human populations as well ( 212 CHAPTER NINE.
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Sommario
A Synopsis of Evolutionary Theory | 19 |
Heredity and Development | 33 |
The Ecological Context of Evolutionary Change | 51 |
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AA AA adaptive advantageous alleles alterations ancestor animals appear arise associated average become behavior biological birds body bristle cause cent Chapter character characteristics chromosome common complex consists depends derived determined developmental differentiation direction Discuss distribution diversity dominant drift Drosophila ecological effect environment environmental enzyme equilibrium evidence evolution evolutionary evolved example exist extinction factors Figure fitness fossil function gene flow gene frequency genetic genetic variation genotypes geographic greater growth heterozygotes higher highly human hybrid important increase individuals insects instances interactions isolated kinds less loci locus major males mating mean mechanisms mutation natural selection occur offspring organisms origin patterns phenotypic plants Pleistocene polymorphic population possible predators present probability produce recombination relative reproduction response sexual similar single speciation species structure theory tion variance vary