What was known before Franklin and Wilkins conducted their studies of DNA? Select three options.

Question

DNA is found in the nucleus of a cell.
The human genetic code is made of 50,000 genes.
Organisms store and transmit genetic information.
DNA has a double-helix structure.
Cells contain protein molecules.

Answer 1

Before Franklin and Wilkins conducted their studies of DNA, the following three options were known:

1. DNA is found in the nucleus of a cell.
2. Organisms store and transmit genetic information.
3. Cells contain protein molecules.

The double-helix structure of DNA was elucidated later, based on Franklin's x-ray diffraction images and Watson and Crick's subsequent model. The idea that the human genetic code consists of 50,000 genes was also not established at that time; the understanding of human genetics was still evolving.