The only blocks not in this picture are the green and gray HSTs. The overall quilt will be 60"x70". the helix pattern is 6 blocks by 12 blocks, with each finished square coming to 5". I used the stack two squares, sew around the edge, then cut diagonally for the HST making, so 4 at once. Then I squared them up to 5.5". Didn't take long at all, and the solid areas on either side will be whole cloth, so no block making other than the helix - and the helix/DNA thing is why I thought of this pattern this buddy.
PS I graduated from Nursing School this past Friday. I am now a BSN and will be taking the boards in January with a big move to DC immediately following become a member of the US Navy Nurse Corps.