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 84
... locus is sex - linked rather than autosomal , two - thirds of the genes ' in a population with a 1 : 1 sex ratio are ... locus , and p2 and q2 the frequencies of alleles B and B ' at a second locus . The loci recombine and segregate in ...
... locus is sex - linked rather than autosomal , two - thirds of the genes ' in a population with a 1 : 1 sex ratio are ... locus , and p2 and q2 the frequencies of alleles B and B ' at a second locus . The loci recombine and segregate in ...
Pagina 164
... loci that are not directly observed may cause the difference in fitness . Suppose that at the observed locus , A , the fitnesses of genotypes AA , AA ' and A'A ' are 1 , 1 , and 1 - S1 respectively , and that at a closely linked locus ...
... loci that are not directly observed may cause the difference in fitness . Suppose that at the observed locus , A , the fitnesses of genotypes AA , AA ' and A'A ' are 1 , 1 , and 1 - S1 respectively , and that at a closely linked locus ...
Pagina 227
... loci that , like our hypothetical locus A , reduce hybrid fitness , for it is only then that most genes will be closely linked to a locus that restricts gene exchange . The low fitness of hybrids in some narrow hybrid zones seems ...
... loci that , like our hypothetical locus A , reduce hybrid fitness , for it is only then that most genes will be closely linked to a locus that restricts gene exchange . The low fitness of hybrids in some narrow hybrid zones seems ...
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