
he now has Leonard Nimoy's DNA.
The Big Bang Theory Season 12, Episode 24

with your
DNA in it.
The Big Bang Theory Season 7, Episode 7

Oh, sure, '’cause
Sheldon'’s DNA plus my DNA
The Big Bang Theory Season 12, Episode 3

Oh, sure, '’cause
Sheldon'’s DNA plus my DNA
The Big Bang Theory Season 12, Episode 3

Yeah, I was studying
recombinant DNA technology...
The Big Bang Theory Season 2, Episode 4