Determining male or female

  • Thread starter drcathyc
  • Start date
  • #1
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I am a science fiction writer and got to thinking about how we determine if a being is male or female. Of course, I understand our biology of eggs and sperm, but just what makes a cell either an egg or sperm?
 

Answers and Replies

  • #3
24
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thanks so much. That's exactly what I was looking for.
 

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