What are the classic jokes in the field of biology

Classic jokes in the field of biology:

Joke 1:

At the meeting of the Soviet Academy of Sciences, biologist lysenko refuted Morgan's genetic theory and advocated his "acquired genetic theory". Landau, a famous physicist, stood up and asked: Do you mean that if we cut off the ear of a cow and then cut off the ear of its offspring, one day we can cultivate a cow without ears?

Lysenko replied: Yes, that's right.

Landau said: Very good. Then please explain why women are born virgins.

Joke 2:

In high school, girls asked boys, "Are the leaves leaving or the wind chasing, or are the trees not staying?"

The boy said, "It's abscisic acid."

The girl left him. A few years later, they met again, and both of them were less immature and more mature.

The girl asked, "Is the departure of leaves the pursuit of the wind or the failure of the tree to retain?"

The boy said, "Sorry, it's mainly ethylene."

Joke 3:

When one RNA felt lonely, it began to translate, and finally a protein was translated. RNA was very happy and said to protein, Hello, my name is RNA. Protein said: Hello, my name is RNase.