Question

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

Explanation:

• Rosalind Franklin: Known for her work on the X - ray diffraction images of DNA (in the 1950s), not the discoverer of DNA.
• Friedrich Miescher: In the 1860s, while studying white blood cells, he isolated a substance (which we now know as DNA) from the nuclei of these cells.
• Oswald Avery: In the 1940s, his work helped show that DNA was the genetic material, not the discoverer of DNA.
• James Watson and Francis Crick: In 1953, they proposed the double - helix structure of DNA, not the discoverer of DNA.

Answer:

Friedrich Miescher