Le possibili relazioni tra fertilità e polimorfismi genetici nell'uomo sono state analizzate sulla base degli esami effettuati in un campione di famiglie fertili italiane esaminate al momento del parto di uno dei figli. I risultati ottenuti per circa 20 marcatori genetici sono stati confrontati con quelli riportati in letteratura su campioni di famiglie non selezionate per ciò che riguarda misure correlate ai differenziali di fertilità. Nel complesso i dati non rivelano alcun effetto selettivo misurabile. Viene inoltre discussa la possibilità che sporadici errori tecnici, benché rari, abbiano un effetto nel mascherare deviazioni significative dall'equilibrio.
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Con il contributo del Ministero per i Beni e le Attività Culturali