be in (one's) blood

To be innate, as of a skill or quality. All of my relatives are doctors—medical prowess is just in our blood.

Name	Pronounced	Usage
Oskars	-	Latvian
Catherine	ka-tə-REEN (French), ka-TREEN (French), KATH-ə-rin (English), KATH-rin (English)	French, English
Oakley	['əukli]
Torrie	['tɔri]
Caoimhe	KEE-va, KWEE-va	Irish, Scottish
Riccarda	-	Italian