A re-examination of the heritability of fertility in the British peerage.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D005298:Fertility; D014644:Genetic Variation; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D012641:Selection, Genetic; D012923:Social Class; D006113:United Kingdom