miscellaneous slide











Genotype Versus Phenotype

words and music by Greg Crowther


I'll start this by noting
That genes encode proteins,
Which dictate cell function and form.
So if a gene mutates,
The cell may gain new traits
Far better or worse than the norm.

Genotype -- ooh...
It's the genes you possess;
Nothing more, nothing less --
Versus phenotype -- ooh...
Your appearance and health
And reproductive success.

In some situations,
There is a mutation,
Yet phenotype stays just the same.
So guessing the genotype
Just from the phenotype
Can be a difficult game.



The distinction between genotype and phenotype can be confusing to introductory biology students. This song was written as a study aid for these students -- specifically, the students in Biological Frameworks for Engineers.

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