Question

18/19 why is are the new dna strands called \semi - conservative\? because they contain one side of the original parent strand and one new strand because it likes the wear tank tops because both sides of the strand are new

Explanation:

DNA replication follows semi - conservative model. In this process, each new DNA molecule consists of one original (parent) strand and one newly synthesized strand.

Answer:

because they contain one side of the original parent strand and one new strand