Hi,
Perhaps my wording was wrong.In humans,the woman passes on the genes to produce the males testes-my reference is biology books and science shows,the woman also passes on the size of the testes,and this can be heavily influenced thru environment,diet and the overall health of the pregnant woman.I don't say it's all the woman,the man has to influence the gene pool of the child,however,the final expression of the testes are more directly influenced by the pregnant woman in utero.
As far as expertise goes I can e-mail an animal genetics professor at the University of New England,Australia,who has authored a book on the genetics of the dog to find out more onthis subject.
Simon
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