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Where`s the Starting Point? Researchers try to unravel the mystery of DNA Replication During Cell Division Cells divide so that an organism can grow, wounds can heal or cells with a limited lifetime, such as blood cells, can be renewed. However, before a cell starts to divide it must first replicate its entire genetic makeup (i.e., its DNA). This basic biological principle holds true for yeast, bacteria, viruses, and animals, and, thus, also for humans.
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