Question

dna was first extracted by watson and crick maurice wilkins friedrick miescher linus pauling none of the above

Explanation:

Friedrich Miescher first isolated DNA in 1869 while studying white blood cells in pus - coated bandages. Watson and Crick are known for determining the double - helix structure of DNA. Linus Pauling made contributions to the study of protein structure. Maurice Wilkins provided X - ray diffraction images that were crucial for the discovery of DNA's structure.

Answer:

C. Friedrick Miescher