Question

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

Explanation:

Friedrich Miescher first identified DNA in 1869 while studying white blood cells. He isolated a substance from the nuclei of the cells and named it "nuclein". Rosalind Franklin is known for her X - ray crystallography work on DNA structure. Erwin Chargaff formulated Chargaff's rules about base - pair ratios in DNA. James Watson, along with Francis Crick, is credited with discovering the double - helix structure of DNA.

Answer:

C. Friedrich Miescher