Biology Jokes

Who says science jokes are not funny? Below you can see some of the best Biology jokes we know, along with short explanations of the more obscure of them.

Do you know any funny Biology jokes yourself? Let us know in the comment section below.


Two blood cells met and fell in love. Alas, it was all in vein.

Explanation
A clever wordplay with the words “vein” and “vain”.


Pavlov is sitting at a pub, enjoying a pint. Suddenly the phone rings and he jumps up shouting, “Oh no, I forgot to feed the dog!”

Explanation
Pavlov is a physiologist who used to ring a bell every time he fed his dogs. After some time, he noticed that ringing the bell by its own caused salivation in his dogs, even if he didn’t offer them any food.


“I wish I was adenine, then I could get paired with U.”

Explanation
In RNA (Ribonucleic acid), adenine (A) makes a “base pair” with uracil (U).


“What did one sister chromatid say to the other?”
“Stop copying me.”

Explanation
“Sister chromatids” are two identical chromatids (replicated chromosomes), which are joined with each other.


What does DNA stand for? National Dyslexia Association.

Explanation
Dyslexia is a reading disorder, which causes various troubles during reading, even for people with normal intelligence. If read correctly, the abbreviation for National Dyslexia Association should be NDA, not DNA.


“What did the stimulus do to the neuron after they got married?”
“It carried it over the threshold.”

Explanation
The “threshold” is the depolarization level over which a stimulus must carry the neuron, in order for an action potential to be fired.


An infectious disease enters a bar. The bartender says, “We don’t serve your kind here”. The disease replies, “Well, you are not a very good host.”

Explanation
The word “host” has several meanings, one of which is “a person who accommodates guests”, and another one is “an animal or a plant in which a parasite lives”.


The scientists have just found the gene for shyness. They would have found it earlier, but it was hiding behind two other genes.


“What is the fastest way to determine the sex of a chromosome?”
“Pull down its genes.”

Explanation
Word play with the words “genes” and “jeans”.


One lab rat says to another:
I’ve got my scientist so well trained that every time I push the buzzer, he brings me a snack.”


“Girl, you are so hot, you denature my proteins.”

Explanation
When things get hot, proteins denature, i.e. lose their shape and structure.


“What did Gregor Mendel say when he founded genetics?”
“Woopea!”

Explanation
Gregor Mendel made his experiments using pea plants.


“What is sleeping brain’s favorite rock band?”
“REM”

Explanation
REM stands for “rapid eye movement”, which occurs during sleep.

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