Question

who first identified dna?
rosalind franklin
erwin chargaff
friedrich miescher
james watson

Explanation:

Friedrich Miescher was the first to identify DNA. He isolated a substance from the nuclei of white blood cells in 1869 and named it "nuclein" (which is now known as DNA). Rosalind Franklin is known for her work on the X - ray crystallography of DNA. Erwin Chargaff discovered the base - pairing rules (Chargaff's rules). James Watson, along with Francis Crick, proposed the double - helix structure of DNA.

Answer:

Friedrich Miescher