Max and Jen sat across from me on the sofa. “What brings you in today?” I asked. Max fidgeted nervously on the sofa. “I’ll go first,” […]

By Brian Aguado, University of California San Diego Most mammals, including humans, have two sex chromosomes, X and Y. One sex chromosome is usually inherited from […]

Last New Year’s Eve, I walked into my parent’s house after running errands and heard news I’ll never forget. My mom stood by the Christmas tree, […]

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