The primary reason that chromosomes and DNA duplicate themselves is that, during cell division, a cell needs to ensure that each daughter cell receives an identical set of genetic information. Here’s a more detailed breakdown:
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Cell Division: When a cell divides (through processes like mitosis or meiosis), it must replicate its DNA so that each new cell inherits the complete set of genetic instructions. This ensures that all cellular functions can be carried out correctly.
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Maintaining Genetic Consistency: Duplication of DNA helps maintain genetic consistency across generations of cells. Each new cell requires a complete copy of the genome to function properly and to maintain the organism's traits.
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Repair and Growth: While DNA can be damaged due to various factors, the primary reason for duplication is not just repair but also to facilitate growth and development. As organisms grow, their cells divide, and each new cell needs full DNA complements.
So, the most accurate statement from your options is: "A cell needs to make a copy of its DNA so there is a second set of DNA to go into the new cell that's created during cell division."
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