Question

multiple choice question
during semiconservative dna replication,
one of the new daughter double helices is made of the two original strands, while the other one is made of two new strands
one of the strands in each new double helix comes from the original molecule, and one is newly synthesized
random portions of each new double helix come from the original molecule or are newly synthesized

Explanation:

Semiconservative DNA replication means that each new DNA double - helix consists of one original strand and one newly synthesized strand. This was proven by the Meselson - Stahl experiment.

Answer:

one of the strands in each new double helix comes from the original molecule, and one is newly synthesized