Lyrics:

See the little nuclei
Bursting full of information
There's a need to regulate
Bring it down to cells and plasma

Tell you what they're gonna do
Started doing it already
Got to find something new
Looking for it in genetix

Found a new game to play
Think it's impossible to lose
Messing round at playing God
Easy way to play genetix

Gene regulation

'The first law of Segregation
States that any gamete male
Or female can carry the
Determinant gene of only one
Pair of alternative characteristics.
The second law of free assortment
States that in a cross involving
One pair of alternative characteristics,
The characteristics will segregate
In the second filial generation,
In the relative proportions of
9, 3, 3, 1'