Question

Based on the three proposed models of DNA replication, which model(s) were experimentally disproved?

विकल्प

• Only the conservative model

• All three models were disproved

• Only the dispersive model

• Both the conservative and dispersive models

Answer 1

Meselson and Stahl's 1958 experiments definitively disproved both the conservative and dispersive models, while proving the semi-conservative model correct. The conservative model predicted two entirely distinct daughter molecules, while the dispersive model predicted hybrid segments in both strands—neither matched the experimental results.