Semi-conservative DNA replication facts Steps:

• Identify location: Eukaryotic DNA replication occurs in nucleus, not cytoplasm (A false).
• Check base pairing: DNA uses A-T, not A-U (uracil in RNA) (B false).
• Define semi-conservative: Each daughter DNA has one parental strand and one new strand (C true).
• Verify base composition: Replication preserves nucleotide percentages via complementary pairing (D true). Why 2 are correct:
• C and D align with semi-conservative model and Chargaff's rules. Why A is wrong:
• DNA replication in eukaryotes is nuclear, not cytoplasmic. Why B is wrong:
• Template is DNA, pairing A with T, not U. Why the others are correct:
• Not applicable; C and D are accurate.

Final answer: 2