## Metadata - Author: [[Siddhartha Mukherjee]] - Full Title: The Gene - Category: #books ## Highlights - In 1905, using cells from the common mealworm, Stevens demonstrated that “maleness” in worms was determined by a unique factor—the Y chromosome—that was only present in male embryos, but never in female ones (under a microscope, the Y chromosome looks like any other chromosome—a squiggle of DNA that stains brightly blue—except that it is shorter and stubbier compared to the X chromosome). Having pinpointed the location of gender-carrying genes to a single chromosome, Stevens proposed that all genes might be carried on chromosomes. ([Location 1664](https://readwise.io/to_kindle?action=open&asin=B017I25DCC&location=1664)) - Nazism, the biologist Fritz Lenz once said, is nothing more than “applied biology.” ([Location 2116](https://readwise.io/to_kindle?action=open&asin=B017I25DCC&location=2116))