Nature 222, 445 - 446 (03 May 1969); doi:10.1038/222445a0

Xg^a Blood Group System and the Sex Ratio in Man

CHARLES E. JACKSON, JOSEPH D. MANN & WILLIAM J. SCHULL

Caylor-Nickel Research Foundation, 311 South Scott Street, Bluffton, Indiana 46714
Department of Pathology, Butterworth Hospital, Grand Rapids, Michigan 49503
Department of Human Genetics, University of Michigan, Ann Arbor, Michigan 48104

An immunological incompatibility between mother and foetus in the sex-linked Xg^a blood group system may help to explain the preferential birth of males.

References

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