Subject: What determines the number of seeds in a mandarin?

What determines the number of seeds in a mandarin? Would every manderin on one 
tree have the same number of seeds? Does the tree contain genes for the number 
of seeds in it's maderines, similar to the way a human's genes determine their 
fertility (i think)? If so, does it contain a seperate gene for every manderine 
the tree will ever produce? On that note, do fruit trees have a pre-determined 
number of pieces of fruit they will produce in their natural life, similar to 
how the number of eggs a female (human) has is determined either before they 
are born or very early in life? 
I thank you in advance for your time. please correct any misinformation i may 
have included in my question. And thankyou so much for your time and effort in 
running this forum; this site rocks! 

Re: What determines the number of seeds in a mandarin?