Replication

AP Biology· difficulty 2/5

DNA replication is semiconservative because

A
$Both daughter molecules consist entirely of newly synthesized strands$
B
$Each daughter molecule contains one parental strand and one new strand$
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C
$Only one of the two parental strands serves as a template for replication$
D
$Each daughter contains alternating segments of old and new nucleotides$

Explanation

Meselson-Stahl experiment confirmed: each new helix has one old strand serving as template plus one newly synthesized strand.

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