This is hilarious, to those who know about DNA technology and the Polymerase Chain Reaction.

Its an advertisement done by BioRad and the singers are all scientists and researchers.

Lyrics:

There was a time when to amplify DNA

You had to grow tons and tons of tiny cells

Then along came a guy named Dr. Kary Mullis

Said you can amplify in vitro just as well

Just mix your template with a buffer and some primers, Nucleotides and polymerases, too.

Denaturing, annealing, and extending

Well it's amazing what heating and cooling and heating will do

Chorus:

PCR, when you need to detect mutations

PCR, when you need to recombine

PCR, when you need to find out who the daddy is

PCR, when you need to solve a crime