What Determines the Sex of an Organism?

[drcathyc]

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?

 

[Monique]

You can find the answer here: https://www.physicsforums.com/showthread.php?t=403332&highlight=sperm

 

[drcathyc]

thanks so much. That's exactly what I was looking for.