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Natural selection in industrialized countries: a study of three generations of Italian newborns
L Ulizzi1, P Astolfi, L A Zonta
1Dipartimento di Genetica e Biologia Molecolare C. Darwin, Università La Sapienza, Rome, Italy. ulizzi@axcasp.caspur.it
Annals of Human Genetics
|July 11, 1998
Abstract:
We have studied the impact of natural selection on the Italian population, analysing the relationship between stillbirth and three related variables: birth weight, birth order and maternal age. A progressive relaxation of selection with time has been demonstrated by the reduction of the Haldane index calculated with respect to the three variables.