Question

1. the double helix structure of dna has been known for approximately how long?

a. 10 years
b. 30 years
c. 70 years
d. 150 years
e. 300 years

Explanation:

The double - helix structure of DNA was discovered by Watson and Crick in 1953. As of 2023, it has been approximately 70 years.

Answer:

C. 70 years