Evolutionary BiologyOxford University Press, Incorporated, 1979 - 565 pagine Futuyma (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 |
Dall'interno del libro
Risultati 1-3 di 52
Pagina 44
... enzyme incapable of synthesizing tryptophan . The suppressor mutation su - td at another locus restores tryptophan - synthesizing ability , perhaps by lowering the intracellular concentration of Zn ++ or other ions to which the mutant ...
... enzyme incapable of synthesizing tryptophan . The suppressor mutation su - td at another locus restores tryptophan - synthesizing ability , perhaps by lowering the intracellular concentration of Zn ++ or other ions to which the mutant ...
Pagina 215
... enzyme are presumably genetically the same . So it is possible to identify an invariant gene locus by finding an invariant enzyme . By taking a random sample of all kinds of enzyme and determining what fraction of them is genetically ...
... enzyme are presumably genetically the same . So it is possible to identify an invariant gene locus by finding an invariant enzyme . By taking a random sample of all kinds of enzyme and determining what fraction of them is genetically ...
Pagina 252
... enzyme are produced , an enzyme with only a slight affinity for the novel substrate may metabolize enough of it to enhance growth . ( 4 ) Constitutive mutations of operator genes ( Chapter 3 ) , resulting in permanent derepression of enzyme ...
... enzyme are produced , an enzyme with only a slight affinity for the novel substrate may metabolize enough of it to enhance growth . ( 4 ) Constitutive mutations of operator genes ( Chapter 3 ) , resulting in permanent derepression of enzyme ...
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