Medical Hypotheses
Volume 58, Issue 1 , Pages 15-17 , January 2002

Can the sex of the second child be predicted by the birth-weight of the first child?

Received 6 November 2000 ,Accepted 20 March 2001.

References 

  1. Trivers RL, Willard DE. Natural selection of parental ability to vary the sex radtio of offspring. Science. 1973;179:90–92
  2. Clutton-Brock TH. The Evolution of Parental Care. Oxford: Princeton University Press; 1991;
  3. Austad SN, Sunquist ME. Sex-ratio manipulation in the common opossum. Nature. 1986;324:58–60
  4. Huck UW, Labov JD, Lisk RD. Foot-restricting young hamsters (Mesocricetus auratus) affects sex ratio and growth of subsequent offspring. Biol Reprod. 1986;35:592–598
  5. Clutton-Brock T, Albon SD, Guiness FE. Maternal dominance, breeding success and birth sex ratios in red deer. Nature. 1984;308:358–360
  6. Meikle DB, Tilford BL, Vessey SH. Dominance rank, secondary sex ratio, and reproduction of offspring in polygynous primates. The American Naturalist. 1984;124:173–188
  7. Chahnazarin A. Determinants of the sex ratio at birth: review of recent literature. Social Biology. 1988;35:214–235
  8. Teitelbaum MS, Mantel N. Socio-economic factors and the sex ratio at birth. J Biosocial Sci. 1971;3:23–41
  9. Grant VJ. Maternal dominance and the conception of sons. Br J Med Psychol. 1994;67:343–351
  10. Hings I, Billingham RE. H-Y antigen and immunity: a means for controlling the secondary sex ratio?. J Reprod Immunol. 1984;6:345–352
  11. Pechan P. Anti-male (anti-H-Y) male treatment influences progeny sex ratio. J Reprod Immunol. 1985;7:361–364
  12. Gualtieri CT, Hicks RE, Mayo JP. Influence of sex of antecedent siblings on the human sex ration. Life Sci. 1984;34:1791–1794

PII: S0306-9877(01)91400-8

doi: 10.1054/mehy.2001.1400

Medical Hypotheses
Volume 58, Issue 1 , Pages 15-17 , January 2002