The Dominant Gene, the Dominant Gene,
Is the happiest creature that ever was seen;
We mortals can only admire at a distance
The joys of a chromosomatic existence,
And marvel how Nature determines the sexes
By cunningly mixing the Ys and the Xs
(For as Mendel has proved, it is only statistics
That settle our primary characteristics).
Imagine the life of ineffable bliss you
Could spend as a speck in the nuclear tissue,
Fraternally linked to a charming Recessive
(Your relationship tender, but firmly possessive),
Dictating the pigment, the shape of the nose,
Or whether your host should have suckers for toes.
You find immortality's promise seductive?
Make your home in a cell that is marked Reproductive.
A short life, but merry? You dread being static?
Your calling is plain - you are clearly Somatic;
For you cannot grow stale, with your every ambition
Fulfilled by perpetual cellular fission.
So banish your doubts, your neuroses, and revel
In life as it's lived at molecular level!

Princess! You'll discover the key to my riddle
By shuffling two chromosomes, split down the middle.