Natural selection associated with birth weight. I. Selection intensity and selective deaths from birth to one month of life
| Autor: | L. Ulizzi, M. F. Gravina, L. Terrenato |
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| Rok vydání: | 1981 |
| Předmět: |
Male
Birth weight Population Biology Pregnancy Infant Mortality Genetics medicine Birth Weight Humans Selection Genetic education Fetal Death Genetics (clinical) Selection (genetic algorithm) education.field_of_study Natural selection Infant Newborn medicine.disease Infant mortality Child mortality Female Developed country Infant Premature Demography |
| Zdroj: | Annals of human genetics. 45(1) |
| ISSN: | 0003-4800 |
| Popis: | Differential mortality as a function of birth weight was studied up to the 4th week of life in all single births in Italy in 1974. It was found that: (i) Both selection intensity and selective mortality are much higher with increasing immaturity. (ii) For babies born at term or after 8 months of pregnancy selection intensity tends to relax as early as one week after birth, while for those born after 7 months selection is at work for a longer period. (iii) Selective mortality, on the other hand, keeps increasing after birth but its relevance is relatively decreasing since average mortality after birth continues to decrease. |
| Databáze: | OpenAIRE |
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