Pesticides A study published in 2002 in the journalEnvironmental Health Perspectives examined the genderratios of children born to workers exposed to dioxin inRussian pesticide factories. The data covered the yearsfrom 1961 to 1988 in the city of Ufa, Bashkortostan,Russia. Of 227 children born to workers exposed todioxin, only 40% were male. Overall in the city of Ufa, the proportion of males was 51.2%. Is this evidencethat human exposure to dioxin may result in the birth of more girls? (An interesting note: It appeared that pater-nal exposure was most critical; 51% of babies born to mothers exposed to the chemical were boys.)

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Pesticides A study published in 2002 in the journal
Environmental Health Perspectives examined the gender
ratios of children born to workers exposed to dioxin in
Russian pesticide factories. The data covered the years
from 1961 to 1988 in the city of Ufa, Bashkortostan,
Russia. Of 227 children born to workers exposed to
dioxin, only 40% were male. Overall in the city of Ufa,

the proportion of males was 51.2%. Is this evidence
that human exposure to dioxin may result in the birth of
more girls? (An interesting note: It appeared that pater-
nal exposure was most critical; 51% of babies born to
mothers exposed to the chemical were boys.)
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