he now has Leonard Nimoy's DNA.
The Big Bang Theory Season 12, Episode 24
...but it has been pointed out to me
that you carry DNA of great potential.
The Big Bang Theory Season 1, Episode 15
Oh, sure, '’cause
Sheldon'’s DNA plus my DNA
The Big Bang Theory Season 12, Episode 3
I possess the DNA of Leonard Nimoy?
The Big Bang Theory Season 2, Episode 11
Clearly, the combination of our DNA
is exceptional.
The Big Bang Theory Season 10, Episode 8