Final answer:
The Lewis gene is also known as FUT3 in Biology.
Step-by-step explanation:
The Lewis gene is also known as FUT3. FUT stands for fucosyltransferase, which is an enzyme responsible for the addition of fucose sugars to glycoproteins and glycolipids. The Lewis gene, specifically FUT3, plays a role in the synthesis of Lewis antigens which are found on red blood cells and other tissues.