DNA replication results in two DNA molecules. What is true about each of the two new DNA molecules?

• A. Each new DNA molecule contains two new strands.
• B. Each new DNA molecule contains two original strands.
• C. Each new DNA molecule consists of one original strand and one new strand.
• D. Each new DNA molecule is identical to the original DNA molecule.

Answer: (C)

Verified step by step guidance

1. Understand the concept of DNA replication: DNA replication is the process by which a cell duplicates its DNA, resulting in two DNA molecules from one original molecule.
2. Learn about the semi-conservative model of DNA replication: In this model, each of the two new DNA molecules consists of one original strand and one new strand. This is because during replication, the two strands of the original DNA molecule separate, and each serves as a template for the synthesis of a new complementary strand.
3. Recognize the role of enzymes: DNA polymerase is the enzyme responsible for adding nucleotides to the growing strand, using the original strand as a template. This ensures that each new DNA molecule has one strand from the original DNA and one newly synthesized strand.
4. Consider the implications of semi-conservative replication: Since each new DNA molecule contains one original strand, the genetic information is preserved, allowing for accurate transmission of genetic information during cell division.
5. Reflect on the identity of the new DNA molecules: Although each new DNA molecule consists of one original and one new strand, they are identical to the original DNA molecule in terms of sequence, ensuring consistency in genetic information.