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 97
... 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 enzymes 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 enzymes and determining what fraction of them is genetically ...
Pagina 181
... enzymes have provided strongly suggestive evidence that allozyme genotypes differ in fitness when the appropriate substrate for the enzyme is provided ( Koehn et al . 1983 ) . This technique is especially useful if the organism can be ...
... enzymes have provided strongly suggestive evidence that allozyme genotypes differ in fitness when the appropriate substrate for the enzyme is provided ( Koehn et al . 1983 ) . This technique is especially useful if the organism can be ...
Pagina 477
... enzyme ( the ebg enzyme ) that enabled it to hydrolyze lactose ; this enzyme is different from the normal ẞ - galactosidase . Transcription of the gene ( ebgA ) for this enzyme is ordinarily repressed by an operator gene ( ebgR ) that ...
... enzyme ( the ebg enzyme ) that enabled it to hydrolyze lactose ; this enzyme is different from the normal ẞ - galactosidase . Transcription of the gene ( ebgA ) for this enzyme is ordinarily repressed by an operator gene ( ebgR ) that ...
Sommario
CONCEPTIONS AND MISCONCEPTIONS | 7 |
EVOLUTION SINCE THE SYNTHESIS | 13 |
ADAPTATION AND ENVIRONMENT | 19 |
Copyright | |
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adaptive advantage allele allele frequency animals appear arise associated average become behavior biological cause cells Chapter characteristics characters chromosome common competition condition conversion copies correlation depends determined developmental differentiation distribution divergence Drosophila ecological effect elements environment enzyme equilibrium evidence evolution evolutionary evolved example exist expression extinction factors Figure fitness fossil frequency function gene genetic genetic drift genome genotypes geographic greater groups growth higher host human hybrid important increase individual insects interactions isolation less linkage loci locus lower major males mating mean mechanisms morphological mutation natural selection occur organisms origin pairs pattern phenotypic plants Pleistocene polymorphism population possible predators Press probability proteins reduced region relationships relative represent reproductive response sequence similar single speciation species structure taxa term theory tion traits variance variation vary