Question

When one DNA molecule is copied to make two DNA molecules, the new DNA
contains
A) 25% of the parent DNA.
B) 50% of the parent DNA.
C) 75% of the parent DNA.
D) 100% of the parent DNA.
E) none of the parent DNA.

Answer 1

That would be B.

One strand will be newly made the other will be old/parent strand.

Answer 2

b. 50% of the parent dna