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Jack J. Lee

Jack is a science writer based in the San Francisco Bay Area. He has a bachelor’s degree in biology from Caltech and a PhD in molecular biology from Princeton University. He also completed a master’s in science communication at the University of California, Santa Cruz. In July 2021, he began a communications fellowship at the National Cancer Institute’s Division of Cancer Prevention. You can find more of his work at

Articles by Jack J. Lee
Conceptual image of gene expression in DNA
Enhancers: Conserved in Activity, Not in Sequence
Jack J. Lee | Nov 1, 2021 | 8 min read
Certain stretches of DNA that regulate gene expression have evolved differently from protein-coding genes.
Elements from illustration showing enhancer evolution and function
Infographic: Enhancer Activity Across the Tree of Life
Jack J. Lee | Nov 1, 2021 | 1 min read
Scientists are still trying to paint a complete picture, but it’s clear that these gene expression regulators have an unusual evolutionary history.
A black mouse runs on a yellow and green spinning wheel against a blue background
Exercising During Pregnancy Protects Mouse Offspring
Jack J. Lee | Aug 1, 2021 | 2 min read
Obese mice that exercised while pregnant gave birth to pups that grew up free of the metabolic issues present in the adult young of sedentary obese mothers—possibly by staving off epigenetic changes to a key metabolic gene.
streaks of white bacterial colonies on a blue Petri dish
Many Bacteria and Archaea Promoters Work Forward and Backward
Jack J. Lee | May 28, 2021 | 4 min read
New analyses find that divergent transcription, in which one promoter directs the expression of two adjacent genes oriented in opposite directions, is conserved across all domains of life.
a person in a white lab coat with a blue glove inserting a clear pcr tube into a which thermocycler while holding an orange box
Coronavirus Mutations Could Muddle COVID-19 PCR Tests
Jack J. Lee | May 17, 2021 | 4 min read
Researchers find that SARS-CoV-2 variants can evade primer-probe sets and recommend that diagnostic assays include multiple targets for reliability.