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timiter timiter
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At about 7 weeks, a genetically male fetus turns on the SRY gene on the ________ chromosome, and gives instructions for formation of the testes.
   a. 21st
   b. X
c. Y
   d. 23rd
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The Dynamic Child

The Dynamic Child


Edition: 1st
Author:
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SouthernerSoutherner
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#2
7 years ago
Heavy Heart Amazing
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