The Pcr Song chords by Scientists for Better PCR

[Chords]
D5   xx023x
D5*  xx003x

[Intro]
e|------------15-14-15-|-12---15------15------|--------------------15-|-12---------14----------|
B|-------0-------------|---------15------13---|-12--------12-13-15----|---------------15-------|
G|-----0---------------|----------------------|--------14-------------|------12-14-------14-12-|
D|---0-----------------|----------------------|-----------------------|------------------------|
A|---------------------|----------------------|-----------------------|------------------------|
E|-3-------------------|----------------------|-----------------------|------------------------|

[Verse]
G                        D/F#        Em
There was a time when to amplify DNA,
    Am7                  G/B          D/F#
You had to grow tons and tons of tiny cells.
     Bm                     Am7       G/B   D/F#
Then along came a guy named Dr. Kary Mullis,
             Am7             G/B           D/F#
Said you can amplify in vitro just as well.

     G                        D/F#            Em
Just mix your template with a buffer and some primers,
Am7               G/B          D/F#
Nucleotides and polymerases, too.
  Bm            Am7           G/B    D/F#
Denaturing, annealing, and extending.
           Am7                     G/B          D/F#
Well it’s amazing what heating and cooling and heating will do.

[Chorus]
D5* D5  G           D/F#             Em
P   C   R, when you need to detect mutations.
  Am7         G/B          D/F#
PCR, when you need to recombine.
  Bm          Am7                      G/B      D/F#
PCR, when you need to find out who the daddy is.
  Am7         G/B             D/F#
PCR, when you need to solve a crime.
https://www.chords.tv/cody-simpson-im-your-friend-chords/
https://www.youtube.com/watch?v=YO-HZqzKYf8