The Science of the Four-leaf Clover

The shamrock is one of the classic symbols of St. Patrick’s Day. Shamrocks, or clover, are generally found with three symmetrical leaves. However, the luckiest among us will occasionally stumble upon an exceedingly rare four-leaf clover. In fact, it’s estimated…

Exploring the Genetics of Taste: PTC PCR Perfection

SNP analysis of the PTC gene using the Polymerase Chain Reaction (PCR) is one of my favorite ways to demonstrate the link between genotype and phenotype in the classroom laboratory. This wonderful experiment involves the isolation of human DNA from…