Either the image is an accurate facsimile (DNA was wrong and the guy's wearing a men's size shirt (buttons are on his right side)) or the image was mirrored (DNA was correct and the guy's wearing a women's size shirt (buttons are on his left))

Shirt buttons are sown onto the left side of women's clothes and the right side of men's. The buttons on his shirt are on his right side.

I'm assuming OP means maybe the DNA model has the helix spinning the wrong way because the image was flipped horizontally, but that would cause the shirt buttons to be on the wrong side for men's clothes.