AP BIOLOGY

Detailed explanation-1: -In the dispersive model, each strand of both daughter molecules contains a mixture of the original DNA, and the newly synthesized DNA. DNA replication is semiconservative because each of the two daughter molecules will have one old strand from the parental molecule, and one newly made strand.

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: -The semi-conservative model is the intuitively appealing model, because separation of the two strands provides two templates, each of which carries all the information of the original molecule. It also turns out to be the correct one (Meselson & Stahl 1958).

Detailed explanation-4: -The experiment verified James Watson and Francis Crick´s model for the structure of DNA, which represented DNA as two helical strands wound together in a double helix that replicated semi-conservatively. The Watson-Crick Model for DNA later became the universally accepted DNA model.

Detailed explanation-5: -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.