Question

after dna replication, each new daughter dna molecule is composed of _______.
fill in the blank.
○ one dna strand and one rna strand
○ two newly synthesized strands
○ one parental strand and one newly synthesized strand
○ two parental strands

Explanation:

DNA replication follows a semi-conservative model. Each parental DNA double helix unwinds, and each strand serves as a template for synthesizing a new complementary strand. Thus, each daughter DNA molecule retains one original (parental) strand and has one newly made strand.

Answer:

one parental strand and one newly synthesized strand