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

Before Franklin and Wilkins’s studies, it was known that DNA is found in the cell nucleus, organisms pass genetic information from one generation to the next, and cells contain proteins. Their work helped reveal DNA’s structure; the double helix was not yet known. The claim that humans have 50,000 genes is not one of the established facts listed here.

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