Biology

Andrew Byrd

7 January, 14:56

Fold your hands together so your thumbs cross over, and look at your thumbs. Which thumb feels most 'comfortable' on top is actually controlled by a gene. The left thumb folding over the right thumb is a dominant trait, whereas the right thumb folding over the left thumb is a recessive trait. Let's call the dominant form of this gene "L," and the recessive form "l."