You can try the first discovery and the 3D controls now. Stella unlocks every stage.
CRISPR: Aiming to Rewrite a Single Line
Scan Cas9 along a DNA double helix, watch a guide RNA lock onto its target by base complementarity, check for the PAM, cut the double strand, and see mismatches switch specificity off.
The one sentence to rewrite
The two twisted ribbons are DNA, and each rung is a base pair (A-T, G-C). Somewhere in this long string of letters is the one place to rewrite — the target. The 12 bases glowing green are that target (the protospacer), and the 3 orange bases right next to it are a marker called the PAM. The genome is three billion letters. How do you aim at just one sentence among them?
In the double helix, confirm the positions of the green target and the orange PAM.
You can try the first discovery and the 3D controls now. Stella unlocks every stage.