A Reproductive Lexicon


Ownership of this website has been transferred from Northwestern University to Michigan State University.
Please note that some site information may be inaccurate while adjustments to reflect this organizational change are made.

MOOC Advertisement

Learn More:
Get An Introduction to Reproduction

Learn more about the science of reproduction. Dr. Teresa Woodruff, creator of Repropedia, is offering a free online course exploring the world of reproduction.

Get Started!


Proteins are the functional units in cells that are encoded within defined regions of DNA. These regions are called genes, and genes are inherited from parents. Humans contain ~20,000 protein-coding genes. Collectively, all the genes in an organism are referred to as a genome.