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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Risultati 1-3 di 75
Pagina 264
( From Wade 1980b ) GROUP SELECTION We have now seen ways in which
traits that appear to benefit the population rather ... Group selection , then , is
variation in the rate of increase or of extinction among such groups , as a function
of their ...
( From Wade 1980b ) GROUP SELECTION We have now seen ways in which
traits that appear to benefit the population rather ... Group selection , then , is
variation in the rate of increase or of extinction among such groups , as a function
of their ...
Pagina 299
For most groups , especially those that do not fossilize readily , the
paleontological record is too fragmentary to be useful . Even in groups with a
good fossil record , there are seldom evenly graded series of fossils between old
and young forms ...
For most groups , especially those that do not fossilize readily , the
paleontological record is too fragmentary to be useful . Even in groups with a
good fossil record , there are seldom evenly graded series of fossils between old
and young forms ...
Pagina 392
enough time for many warm - adapted groups to evolve the adaptations
necessary for surviving freezing temperatures and associated seasonal changes
. Plants must become deciduous or cold - hardy ; insectivorous birds must
migrate or ...
enough time for many warm - adapted groups to evolve the adaptations
necessary for surviving freezing temperatures and associated seasonal changes
. Plants must become deciduous or cold - hardy ; insectivorous birds must
migrate or ...
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Sommario
CONCEPTIONS AND MISCONCEPTIONS | 7 |
Chapter | 18 |
THE EFFECT OF DENSITY | 24 |
Copyright | |
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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 differentiated 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