QUESTION 8Why is DNA replication called semi-conservative? A. Only half of the parent DNA is conserved and the rest is discarded. B. Each daughter DNA molecule is composed of two new strands of nucleotides. C. Each daughter DNA molecule is composed of one parental strand and one new strand. D. The DNA is dispersed within the parent strand.
Question
QUESTION 8Why is DNA replication called semi-conservative? A. Only half of the parent DNA is conserved and the rest is discarded. B. Each daughter DNA molecule is composed of two new strands of nucleotides. C. Each daughter DNA molecule is composed of one parental strand and one new strand. D. The DNA is dispersed within the parent strand.
Solution
The answer is C. Each daughter DNA molecule is composed of one parental strand and one new strand. This is why DNA replication is called semi-conservative. During the process of DNA replication, the double helix unwinds and each strand serves as a template for the synthesis of a new, complementary strand. This results in two DNA molecules, each composed of one old (parental) strand and one newly synthesized strand.
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