crisscrossing Science Episode 018: Arrested Developmental Biology

In this episode, Chris Gaiser (professor of biology at Linfield College) and Mike Crosser (professor of physics at Linfield College) discuss the process in which cells in our bodies develop into vastly different cell types (skin, blood, liver, and so forth), despite all having the exact same DNA sequences. Instead, environmental cues determine which of these genes are expressed for any given cell.