Influence of sex of antecedent siblings on the human sex ratio
Analysis of family configurations in a population of 649, 366 American secondary school students confirmed that sex of later-born children is influenced by the sex of antecedent siblings. Antecedent brothers decrease the probability of subsequent male births. This observation, a confirmation of an e...
Gespeichert in:
| Veröffentlicht in: | Life sciences (1973) 1984-05, Vol.34 (19), p.1791-1794 |
|---|---|
| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | Analysis of family configurations in a population of 649, 366 American secondary school students confirmed that sex of later-born children is influenced by the sex of antecedent siblings. Antecedent brothers decrease the probability of subsequent male births. This observation, a confirmation of an earlier report in a substantially smaller sample, is consistent with an immunologic influence on human sex determination. |
|---|---|
| ISSN: | 0024-3205 1879-0631 |
| DOI: | 10.1016/0024-3205(84)90670-2 |