Use the drop-down menus to complete the sentences.

Question

confirmed the three-dimensional structure of DNA.

first discovered DNA and named it “nuclein.”

first photo of DNA which helped scientists understand its structure.

studied DNA using special X-rays.

Answer 1

1. James Watson and Francis Crick confirmed the three-dimensional structure of DNA.

2. Friedrich Miescher first discovered DNA and named it "nuclein."

3. Rosalind Franklin took the first photo of DNA which helped scientists understand its structure.

4. Rosalind Franklin studied DNA using special X-rays.