St. Mark’s Episcopal School seventh graders Henry Miller and Daniella Nassar (pictured, from left) completed a complex genetics problem and made school history by finishing it. They completed it with limited instruction and help from their teacher. The students had an introduction to genetics, including a study on monohybrid Punnett squares, which examine a single genetic trait. A Punnett square is a diagram named after Reginald C. Punnett, who developed the approach in the early 1900s. The diagram is used by biologists to determine the probability of an offspring having a particular genotype, determining physical traits.

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