Best Swatter Poems

There was a man who loved to swat flies. 

Even when landing on his wife's thighs. 

He said. 'Sorry my dear, 

But I don't really care 

They're aiming towards your mince meat pies.'...

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the female is XX
 and the male is XY
 Every individual 
must have at least 
one X chromosome
Since the female is XX,
 each of her eggs has
 a single X chromosome
 The male, being XY
 can generate two
 types of sperm
 half bear the X...

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