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17 December, 00:34

Watson and Crick's model of DNA replication is called

(A) conservative.

(B) semiconservative.

C) transcription.

(D) translation.

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Answers (1)
  1. 17 December, 00:58
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    (B) semiconservative.

    Explanation:

    According to the model proposed by Watson and Crick, the DNA molecule consists of two polynucleotide chains arranged on a helix around an imaginary axis, rotating to the right (a double helix). That is, the DNA molecule is in the shape of a spiral staircase, in which the "steps" are made up of nucleotide nitrogen bases and the "handrails" are covalently linked phosphate and sugar - so it is said that DNA is shaped like a helical ribbon. Also according to Watson and Crick DNA replication is semi-conservative, because each strand of DNA will give rise to another strand that will be complementary to its nucleotides.
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