Natural selection associated with birth weight. V. The secular relaxation of the stabilizing component.
The secular trend of stabilizing selection on birth weight has been studied during the last decades in 17 countries, representative of America, Asia and Europe. A relaxation of the intensity of selection is regularly observed, which can probably be attributed to a progressive reduction of the environmental component of birth weight variance.
Dipartimento di Genetica e Biologia Molecolare, Università La Sapienza, Roma.
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D001724:Birth Weight; D005260:Female; D005313:Fetal Death; D014943:Global Health; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D012641:Selection, Genetic; D014798:Vital Statistics