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
Apoorva	-	Indian, Hindi, Marathi
Madalena	mə-də-LE-nə	Portuguese
Sioned	SHON-ed	Welsh
Quintillus	-	Ancient Roman
Bas	BAHS	Dutch
Marian (1)	MER-ee-ən, MAR-ee-ən	English