Question

who used x - rays to take unique pictures of dna, which were eventually used to explain its structure?
rosalind franklin
james watson and francis crick
oswald avery
friedrich miescher

Explanation:

Rosalind Franklin used X - ray crystallography to take pictures of DNA. Her famous "Photo 51" was crucial in understanding the structure of DNA. James Watson and Francis Crick used her data (without her full knowledge at the time) to propose the double - helix structure of DNA. Oswald Avery is known for his work showing that DNA is the genetic material. Friedrich Miescher discovered nucleic acids.

Answer:

Rosalind Franklin