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12th Class Biology Sample Paper Biology - Sample Paper-2

  • question_answer
                              It has been observed that replication of DNA begins only at definite regions. Why?

    Answer:

    Replication of DNA molecule begins at definite region called on (origin of replication) because it is the site which binds the pre-replication complex or a protein complex that recognises, unwinds and begins the copying of DNA.                                                                                           


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