AP BIOLOGY

Detailed explanation-1: -DNA replication is semi-conservative because in the replication process the resulting DNA helix is composed of both a new strand and an old strand. This occurs because of the complementary base pairing, I.e. each nitrogenous base only pairs with its complementary pair.

Detailed explanation-2: -Semi-conservative replication. In this model, the two strands of DNA unwind from each other, and each acts as a template for synthesis of a new, complementary strand. This results in two DNA molecules with one original strand and one new strand.

Detailed explanation-3: -Which is true about DNA replication? It is semiconservative.

Detailed explanation-4: -One of the most important concepts of DNA replication is that it is a semi-conservative process (Figure 7.2. 7). This means that every double helix in the new generation of an organism consists of one complete “old” strand and one complete “new” strand wrapped around each other.

Detailed explanation-5: -The correct answer choice is b. DNA replication cannot be “hijacked” by viruses. Choice b is false because viruses are infectious agents that replicate themselves only when they are inside living cells.