Question

Watson and Crick are credited for the discovery that DNA

• A. Is a double stranded helix
• B. Is responsible for the synthesis of tRNA
• C. Is a carrier of genetic information
• D. Provides proof for the X-Y chromosomal theory of sex determination

Answer 1

The correct option is A Is a double stranded helix

The double-stranded helix structure was discovered by James Watson and Francis Crick. They gave rise to modern molecular biology which is largely concerned with the understanding of how genes control the various chemical processes within the cell. DNA is the genetic material in most of the living organism. It is the carrier of genetic information but this was discovered by Watson and Crick.

So, the correct option is 'Is a double-stranded helix'.