Question

who accidentally discovered dna in the 1860s?
friedrich miescher
oswald avery
james watson and francis crick
rosalind franklin

Explanation:

Friedrich Miescher discovered DNA (nuclein) in the 1860s while studying white blood cells. Oswald Avery's work was later in the 20th century related to showing DNA as the genetic material. James Watson and Francis Crick proposed the double - helix structure of DNA in 1953. Rosalind Franklin's X - ray crystallography images were important for understanding DNA's structure, but her work was also in the mid - 20th century.

Answer:

Friedrich Miescher