Evolutionary biology |
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Pagina 276
SEXUAL SELECTION The difference between male and female is ultimately the
difference in the size of their gametes. According to an ESS analysis (Parker et al.
1972, Maynard Smith 1978b), this difference may have evolved initially from the ...
SEXUAL SELECTION The difference between male and female is ultimately the
difference in the size of their gametes. According to an ESS analysis (Parker et al.
1972, Maynard Smith 1978b), this difference may have evolved initially from the ...
Pagina 277
Intrasexual selection arises from contests among males for access to females or
to favorable mating sites, as in elephant seals (Mirounga angustirostris; Cox and
Le Boeuf 1977) and mountain sheep (Ovis canadensis; Geist 1971), in which ...
Intrasexual selection arises from contests among males for access to females or
to favorable mating sites, as in elephant seals (Mirounga angustirostris; Cox and
Le Boeuf 1977) and mountain sheep (Ovis canadensis; Geist 1971), in which ...
Pagina 278
Females of type P; (with frequency pt) do not discriminate in mating, but those of
type P2, with frequency p2, prefer T2 males relative to T, males. If alleles P, and
P2 do not affect females' survival or fecundity, they are selectively neutral.
Females of type P; (with frequency pt) do not discriminate in mating, but those of
type P2, with frequency p2, prefer T2 males relative to T, males. If alleles P, and
P2 do not affect females' survival or fecundity, they are selectively neutral.
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Sommario
CONCEPTIONS AND MISCONCEPTIONS | 7 |
EVOLUTION SINCE THE SYNTHESIS | 13 |
ADAPTATION AND ENVIRONMENT | 19 |
Copyright | |
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adaptive adaptive radiation allele frequency allozyme amino acid ancestor average become behavior biological birds bristle number Chapter character chromosome cladistic coefficient coevolution competition correlation Cretaceous deleterious developmental differentiation distribution diversity Drosophila Drosophila melanogaster ecological effect environment environmental enzyme equilibrium evidence evolutionary change evolved example extinction rates factors favor females Figure fitness fossil record function gametes gene conversion gene flow genetic drift genetic variation genome genotypes geographic groups habitats heritability heterozygotes heterozygous higher taxa homozygotes homozygous host human hybrid inbreeding individual insects interactions Lewontin lineage linkage disequilibrium loci locus males mammals mating molecular morphological mutation natural selection neoteny nucleotide occur offspring organisms parasites pattern phenotype phylogenetic phylogeny plants polymorphism population predators prey proteins pseudogenes rate of evolution recombination region related species relative reproductive isolation sequence sexual similar South America speciation structure survival sympatric taxa taxon theory tion trait transposable elements variance