abe STANFORD UNIVERSITY MEDICAL CENTER

 

is STANFORD, CALIFORNIA 94305 e (415) 321-1200
STANFORD UNIVERSITY SCHOOL OF MEDICINE April 27, 1971
Department of Genetics

aa

Dr. Hilary Koprowski

Max-Planck-Institut fle Verhaltensphysiologie
8131 Seewisen, Abt. Lorenz

GERMANY

Dear Hilary,

I was talking to Irene a few days ago, and she may have written
you, about Claude; now I am glad to have your postcard.

I do not have any independent statistical data on the question
of sex ratio. Walter Bodmer and I had taken some looks at sex ratio
in the data of the U.S. census, We concluded that unreliability of
reporting live births was a larger factor in such data and probably
also in the vital statistics (birth certificates) than was usually
understood. The unreliability as well as the secondary sex ratio
will be confounded with class, regional, and race differences and
these in turn with factors like season of birth. So, our net
conclusion is simply to view data of this kind with acute skepticism
unless specific checks are available to alleviate these sources of
uncertainty.

Sincerely yours,

jostiyé Lederberg
wer Préfessor of Genetics

Edwards, A. W. F.
1958. “An analysis of Geissler's data on the human sex ratio.” Ana. Hum. Genet. 2X1): 6-15.
1960a. ** The meaning of binomial distribution. ** Nature 186: 1074.
1906b. “* Natural selection and the sex ratio.’ Nature 188: 960-961.
1961. ‘The population genetics of ‘sex ratio’ in Drosophila pseudoobscura.” Heredity 16(3):
, 291-304.
1962. “Genetics and the human sex ratio.” Advanc. Genet. 11: 239-272.
1963. “* Natural selection and the sex ratio: the approach to equilibrium.” Amer. Natur, 97:
397-400.
1966. “Séx-ratio data analysed independently of family limitation.” Ana. Hum. Genet, 29:
337-347.
A. W. F., and L. L. Cavalli-Sforza
1964. “Rec of evolutionary trees.”” In V.E. Heywood and J. McNeill
and Phylogenetic i ation No. 6). London:
The System
method for cluster analysis.” Biometrics 21(2):
Edwards, A. W. F., and M. Fraccaro
1958. “The sex distribution in the offspring of 5477 Swedish ministers of religion, 1585-1920. ”
Hereditas 44: 447.
Edwards, J. H.
1958. “‘Congenital malformations of the central nervous system in Scotland.” Brit. J. Prev.
Soc. Med, 12(3): 115-130.
1960. “The simulation of mendelism.” Acta Genet. Statist. Med. 10(1-3): 63-70.
1965. “The meaning of the associations between blood groups and disease.” Ann. Hum. Genet
eee 29: 77-83.
1969. “Familial predisposition in man.” Brit. Med. Bull, 25(1): 58-64.
me +) = ate J. &. KENNEDY, JR. LABORATORIES FOR MOLECULAR MEDICINE, DEDICATED TO RESEARCH IN MENTAL KL sAKwATION

MOLECULAR BIOLOGY HEREDITY NEUROBIOLOGY DEVELOPMENTAL MEDICINE

 
     

   
  
    

 

  
 

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