Evolutionary BiologyCovers 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 110
Postmating isolating mechanisms such as hybrid sterility or inviability ( see below ) also vary geographically . For example , the form and number of chromosomes frequently differs among populations , as in the plant Clarkia unguiculata ...
Postmating isolating mechanisms such as hybrid sterility or inviability ( see below ) also vary geographically . For example , the form and number of chromosomes frequently differs among populations , as in the plant Clarkia unguiculata ...
Pagina 116
The number and form of the teeth are highly distinctive of mammalian taxa , but vary within species of many other vertebrates . Even as fundamental a character as the number of cotyledons , which distinguishes the two great classes of ...
The number and form of the teeth are highly distinctive of mammalian taxa , but vary within species of many other vertebrates . Even as fundamental a character as the number of cotyledons , which distinguishes the two great classes of ...
Pagina 178
Only two electrophoretically distinguishable alleles ( F and S ) are at all common ; their frequencies vary clinally with latitude in several continents , but the polymorphism is ubiquitous ( van Delden 1982 ) .
Only two electrophoretically distinguishable alleles ( F and S ) are at all common ; their frequencies vary clinally with latitude in several continents , but the polymorphism is ubiquitous ( van Delden 1982 ) .
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Sommario
CONCEPTIONS AND MISCONCEPTIONS | 7 |
ADAPTATION AND ENVIRONMENT | 19 |
COMPLEX INTERACTIONS AMONG SPECIES | 34 |
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adaptive advantage allele frequency America animals appear arise average become behavior biological birds caused Chapter characteristics characters chromosomes common competition condition correlated depends derived determined differentiation direct distribution diversity Drosophila ecological effect environment enzyme equilibrium evidence evolution evolutionary evolved example exist extinction factors families favor females Figure fitness fossil function gene gene flow genetic drift genotypes geographic greater groups growth heterozygotes higher human hybrid important increase individual interactions isolation less linkage loci locus lower major males mammals mating mean mechanisms morphological mutation natural selection occur offspring organisms origin pairs pattern phenotype plants Pleistocene polymorphic population possible predators present probability recombination reduced region relative represent reproductive response sequence similar single sometimes speciation species structure taxa term theory tion trait usually variance variation vary