Question

multiple select question select all that apply the steps of dna replication involve: (select all that apply) parental dna splitting apart between its sugar and phosphates complementary base pairing of
ew\ rna nucleotides to the \old\ strand of dna parental dna unwind or unzip at hydrogen bonds complementary base pairing of
ew\ dna nucleotides to the \old\ strand of dna two unique dna molecules made two identical dna molecules made

Explanation:

1. Analyze each option:

• "parental DNA splitting apart between its sugar and phosphates": DNA replication starts with unwinding at hydrogen bonds (between bases), not splitting sugar - phosphate bonds. So this is incorrect.
• "complementary base pairing of 'new' RNA nucleotides to the 'old' strand of DNA": This is transcription (making RNA from DNA), not DNA replication. So this is incorrect.
• "parental DNA unwind or unzip at hydrogen bonds": This is the first step of DNA replication, where the double - helix unwinds by breaking hydrogen bonds between complementary bases. So this is correct.
• "complementary base pairing of 'new' DNA nucleotides to the 'old' strand of DNA": During DNA replication, new DNA nucleotides pair with the old (template) DNA strand according to base - pairing rules (A - T, G - C). So this is correct.
• "two unique DNA molecules made": DNA replication is semi - conservative, producing two identical DNA molecules (each with one old and one new strand), not unique. So this is incorrect.
• "two identical DNA molecules made": Since each new DNA molecule has one original (parental) strand and one newly synthesized strand, the two daughter DNA molecules are identical to the parent and to each other. So this is correct.

Answer:

• parental DNA unwind or unzip at hydrogen bonds
• complementary base pairing of "new" DNA nucleotides to the "old" strand of DNA
• two identical DNA molecules made