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How do you tell X chromosomes from Y chromosomes?

You pull down their genes.

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Tell Jokes More Tell Jokes

When is the only time a white NFL wide receiver is a good thing?

When your sister tells you she's dating an NFL wide receiver.

What dog can tell the time?

A watch dog!

Pull Jokes More Pull Jokes

Why are fire trucks red?

You would be too if someone was pulling on your hose all day.

What did the fisherman say to the sewage management person?

Would you pull that crap with a net?

Gene Jokes More Gene Jokes

What did the perverted embryonic scientist say to the microscope?

Are those my genes because I can definitely see myself in them.

Why did Steve hate being the youngest clone?

Because all his genes were hand me downs.

X Chromosome Jokes More X Chromosome Jokes

How do you tell an X chromosome from a Y chromosome?

Pull down its genes.

How do you tell X chromosomes from Y chromosomes?

You pull down their genes.

Y Chromosome Jokes More Y Chromosome Jokes

How do you tell an X chromosome from a Y chromosome?

Pull down its genes.

Why did Caitlyn Jenner have a differently spelled version of Caitlin?

Because she can't get rid of the Y chromosome