For example, a strand of DNA with a nucleotide sequence of AGTCATGA will have a complementary strand with the sequence TCAGTACT ( Figure 9.8). This means that the two strands are complementary to each other. Recall that adenine nucleotides pair with thymine nucleotides, and cytosine with guanine. The elucidation of the structure of the double helix provided a hint as to how DNA is copied. The replication of DNA occurs during the synthesis phase, or S phase, of the cell cycle, before the cell enters mitosis or meiosis. This is accomplished by the process of DNA replication. When a cell divides, it is important that each daughter cell receives an identical copy of the DNA. Explain the importance of telomerase to DNA replication.By the end of this section, you will be able to:
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