AP BIOLOGY

Detailed explanation-1: -According to the semiconservative model, after one round of replication, every new DNA double helix would be a hybrid that consisted of one strand of old DNA bound to one strand of newly synthesized DNA.

Detailed explanation-2: -The experiment done by Meselson and Stahl demonstrated that DNA replicated semi-conservatively, meaning that each strand in a DNA molecule serves as a template for synthesis of a new, complementary strand.

Detailed explanation-3: -DNA replication is a semi-conservative process, because when a new double-stranded DNA molecule is formed: One strand will be from the original template molecule. One strand will be newly synthesised.

Detailed explanation-4: -DNA replication is ‘semi-discontinuous’ because one of the strands is synthesised continuously, while the other strand, discontinuously by the formation of Okazaki fragments.

Detailed explanation-5: -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.