This worksheet helps students review key concepts like nucleotide structure, DNA base pairing, and the double helix through fill-in-the-blank questions and labeling exercises.

How to use

Click Print to open a print-ready version directly in your browser, or use Download to save the file to your device. The ⭐ Answer button generates an AI answer key instantly - useful for teachers who need a quick reference. Need a different version? Our AI Worksheet Generator lets you create a custom worksheet on any topic in seconds.