Verse 1)
Deep in the cell, where the story is spunChromosomes hold all the work that is done
Built out of DNA, a twisted-up thread
Where genes are the units, like words that are read
Found at the locus, those different spotsAlleles are the versions of traits that we've got.
(Chorus)
It’s the code in the blood, it’s the way that we growGenotype is the secret that’s hidden below
But phenotype shows, yeah, it’s out in the light
The dominant takes over, hiding the recessive from sight
Whether homozygous same, or heterozygous mix
It’s the Mendelian game, yeah, it’s genetics' tricks.
(Verse 2)
Grab a Punnett Square, draw the boxes in four
To see what the offspring might have in their storeMonohybrid for one, Dihybrid for twoProbability tells us what’s coming to view
The Genotypic ratio shows us the genes
The Phenotypic ratio is what the look means
A Pedigree chart tracks the history line
Tracing the traits through the passing of time.