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nfolkab nfolkab
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12 years ago


The sex of an individual is influenced at approximately the seventh week of development by the presence or absence of:


Question 38 options:


  • specific hormones (estrogen or testosterone) secreted by the embryo
  • sympathetic neurotransmitters (norepinephrine)
  • TSH and hGH (growth and developmental hormones)
  • CNS chemical transmitters (serotonin or dopamine) released by the embryo's brain

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wrote...
Valued Member
12 years ago
specific hormones (estrogen or testosterone) secreted by the embryo
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