<p>Comfortable, casual and loose fitting, our heavyweight dark color t-shirt will quickly become one of your favorites. Made from 100% cotton, it wears well on anyone. We’ve double-needle stitched the bottom and sleeve hems for extra durability. Select a design from our marketplace or customize it to make it uniquely yours!</p>
<p>Size & Fit</p>
If you know about Gregor Mendel's contributions to the field of classical genetics -- via the Law of Segregation and the Law of Independent Assortment -- you'll enjoy any of these gifts featuring a dihybrid cross of peas with the wry biological attitude saying "Obey Mendelian Laws". Scientific truism humor for all those with an understanding of classical genetics! Not just for biologists only!