Meaning of the word "blood will tell" in English

What does "blood will tell" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

blood will tell

US /blʌd wɪl tel/
UK /blʌd wɪl tel/
"blood will tell" picture

Idiom

used to say that a person's family background or ancestors have a strong influence on their character or behavior

Example:
He has his grandfather's talent for painting; blood will tell.
Even though he was raised in a different environment, his noble blood will tell.