A student researching DNA has taken notes:
• DNA is a double helix molecule containing genetic instructions • It consists of four nucleotide bases: adenine, thymine, guanine, cytosine • Watson and Crick discovered the structure in 1953 • Each human cell contains about 6 billion base pairs • DNA replicates itself when cells divide
The student wants to explain DNA's role in heredity.
DNA is structured as a double helix and was discovered by Watson and Crick in 1953.
DNA carries genetic instructions and replicates when cells divide, passing hereditary information to new cells.
Each human cell contains approximately 6 billion DNA base pairs.
DNA consists of four nucleotide bases: adenine, thymine, guanine, and cytosine.
Correct Answer: B
Choice B. Carrying instructions and replicating to new cells explains heredity role.