be baked into (one's) DNA

To be a core aspect of one's character, motivation, or lineage; to be an intrinsic or fundamental part of one. He's always been that way, ever since he was a small boy. Helping others just seems to be baked into his DNA. This company has been drilling oil since my great-grandfather first struck crude oil back in 1902. It's baked into our DNA! I'm pretty sure the desire to teach small children is baked into someone's DNA—you can't learn something like that.

be baked into the DNA of (someone or something)

To be a core aspect of someone's or something's character, motivation, or lineage; to be an intrinsic or fundamental part of someone or something. Ambition and determination should be baked into the DNA of anyone looking to be a leader. Innovation is baked into the DNA of this company. We've been one of the foremost leaders of change in this industry for over 80 years. I'm pretty sure the desire to teach small children is baked into the DNA of a person—you can't learn something like that.

be in (one's) DNA

To be a core aspect of one's character, motivation, or lineage; to be an intrinsic or fundamental part of one. He's always been that way, ever since he was a small boy. Helping others just seems to be in his DNA. This company has been drilling oil since my great-grandfather first struck crude oil back in 1902. It's in our DNA! I'm pretty sure the desire to teach small children is in someone's DNA—you can't learn something like that.

be part of (one's) DNA

To be a core aspect of one's character, motivation, or lineage; to be an intrinsic or fundamental part of one. He's always been that way, ever since he was a small boy. Helping others just seems to be part of his DNA. This company has been drilling oil since my great-grandfather first struck crude oil back in 1902. It's part of our DNA! I'm pretty sure the desire to teach small children is part of someone's DNA—and I definitely don't have it!