Why is diarrhea hereditary?

Because it runs in your genes!

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Run Jokes More Run Jokes

Why couldn't Cinderella play soccer?

She always ran away from the ball

What happened to the wizard who ran away with the circus?

The police made him bring it back again.

Gene Jokes More Gene Jokes

How do you tell the difference between an X and Y chromosome?

You pull down its genes.

How do you tell X chromosomes from Y chromosomes?

You pull down their genes.