TY - JOUR
T1 - A two-generation study of human sex-ratio variation
AU - Curtsinger, J. W.
AU - Ito, R.
AU - Hiraizumi, Y.
N1 - Copyright:
Copyright 2004 Elsevier B.V., All rights reserved.
PY - 1983
Y1 - 1983
N2 - We report here the first vertical population study of human sex-ratio variation. Sex-ratio data for 2 generations from Akita, Japan, have been analyzed. Parental age, birth order, sequences of the sexes at birth, and generations have no statistically significant effect on sex ratio. There is a slight excess of males at birth, as is typical for human sex-ratio studies. There is evidence of sex-ratio-dependent family planning. An analysis of vertical transmission of sex-ratio modifying factors that excludes effects of birth order in both the parental and offspring generations has detected a marginally significant paternal effect. Genetic variability of the sex ratio, if present at all, is of a very minor magnitude.
AB - We report here the first vertical population study of human sex-ratio variation. Sex-ratio data for 2 generations from Akita, Japan, have been analyzed. Parental age, birth order, sequences of the sexes at birth, and generations have no statistically significant effect on sex ratio. There is a slight excess of males at birth, as is typical for human sex-ratio studies. There is evidence of sex-ratio-dependent family planning. An analysis of vertical transmission of sex-ratio modifying factors that excludes effects of birth order in both the parental and offspring generations has detected a marginally significant paternal effect. Genetic variability of the sex ratio, if present at all, is of a very minor magnitude.
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M3 - Article
C2 - 6614009
AN - SCOPUS:0020604338
SN - 0002-9297
VL - 35
SP - 951
EP - 961
JO - American Journal of Human Genetics
JF - American Journal of Human Genetics
IS - 5
ER -
