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Multilingual Demographic Dictionary, second unified edition, English volume

Difference between revisions of "Selective value"

Multilingual Demographic Dictionary, second unified edition, English vol.
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(Etienne van de Walle et al., second 1982 edition)
(Etienne van de Walle et al., second 1982 edition)
 
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[[en-II:selective value]] [[ar-II:قيمة الاصطفائية]] [[cs-II:selektivní hodnota]] [[de-II:Selektionswert]] [[es-II:valor selectivo]] [[fr-II:valeur sélective]] [[it-II:valore selettivo]] [[ja-II:淘汰値(選択価)]] [[pt-II:valor seletivo]] [[ru-II:Селективная способность]] [[zh-II:选择值]]  
 
[[en-II:selective value]] [[ar-II:قيمة الاصطفائية]] [[cs-II:selektivní hodnota]] [[de-II:Selektionswert]] [[es-II:valor selectivo]] [[fr-II:valeur sélective]] [[it-II:valore selettivo]] [[ja-II:淘汰値(選択価)]] [[pt-II:valor seletivo]] [[ru-II:Селективная способность]] [[zh-II:选择值]]  
 
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{{DEFAULTSORT:Selective value}}
 
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[[Category:Term of the second edition of the multilingual demographic Dictionary]]
 
[[Category:Term of the second edition of the multilingual demographic Dictionary]]

Latest revision as of 07:35, 5 February 2010

Selective value  (SELECTIVE value)


The probability that an individual of reproductive age will have a given number of offspring who also attain reproductive age may depend on his genotype (912-1). This differential reproduction is called selection 1. The selective value 2 or fitness value 2 of a genotype is the relative number of children of individuals with the genotype who survive to reproductive age. The mean selective value 3 or fitness 3 of a population is equal to the average of the selective values for the genotypes of its members. The genetic load 4 of the population is the relative decline in the mean value of fitness resulting from the presence of different genotypes with varying fitness values. Random fluctuation of the frequency with which a specific gene is found in different generations of a population is called the genetic drift 5. The gene structure 6 of a population refers to the distribution of the frequencies of different alleles (911-5) on a given locus (911-4) within the members of the population. The genotypic structure 7 of a population refers to the distribution of different genotypes on the same locus. More...