Genotype is the internal code of inheritable information and phenotype is the outward physical traits.

Genotype and Phenotype
Genotype and Phenotype, By Professor John Blamire, Science at a Distance, Brooklyn College, State University of New York, If you need help with understanding genotype and phenotype, this is a g
Genotype versus Phenotype
Genotype versus Phenotype, Evolution 101, Stanford University, This is a teacher's resource but it would be beneficial to students as well. It has pictures that illustrate genotype and phenotype
Genotype-phenotype distinction
Genotype-phenotype distinction Wikipedia.org If you're confused as to what these two words represent, maybe this website will help you understand it better.
Genotypes and Phenotypes
Genotypes and Phenotypes, By Paul Andersen, BozemanScience.com, Video Length: 12:57, Paul Andersen explains how changes in the genotype of an individual can affect the phenotype. He begins wit
The Genotype/Phenotype Distinction
The Genotype/Phenotype Distinction, Stanford Encyclopedia of Philosophy, In-depth info for those that want to delve into genotype and phenotype.