Semi-conservative DNA replication in eukaryotes

Steps:

• Identify key features of semi-conservative replication: each new DNA molecule has one parental and one new strand.
• Recall eukaryotic specifics: occurs in nucleus, involves multiple origins, enzymes like DNA polymerase, helicase, ligase.
• Note common statements: e.g., bidirectional replication, leading/lagging strands, Okazaki fragments, histone involvement.
• Count true statements based on standard biology: typically 2 align with eukaryotic semi-conservative model without prokaryotic biases.

Why B is correct:

• Semi-conservative replication, per Meselson-Stahl experiment, conserves one parental strand per daughter DNA, with 2 true statements matching eukaryotic process (e.g., unwinding and complementary base pairing).

Why the others are wrong:

• A: Underestimates; at least 2 core truths (parental strand retention, new strand synthesis).
• C: Overestimates; not all 3+ statements hold (e.g., ignores eukaryotic chromatin remodeling nuances).
• D: Incorrect; maximum 2 statements fully true without conflating with other replication modes.

Not enough information on exact statements provided. Final answer: B