Question

8.
which statement best describes the role of dna replication in the cell cycle?
it produces variations in dna to create new genetic combinations.
it allows the cell to double its genetic material before dividing.
it prevents the loss of genetic information when cells prepare to divide
it ensures each daughter cell gets a full set of dna.
clear all

Explanation:

To determine the role of DNA replication in the cell cycle, we analyze each option:

• "It produces variations in DNA to create new genetic combinations" is incorrect as DNA replication is generally a faithful process and variation is more associated with processes like mutation or genetic recombination (not replication itself).
• "It allows the cell to double its genetic material before dividing" is partially true but not the most accurate description of its role. The key role is to ensure each daughter cell gets a full set.
• "It prevents the loss of genetic information when cells prepare to divide" is not the primary role. The main goal is to provide each daughter cell with a complete genome.
• "It ensures each daughter cell gets a full set of DNA" is correct. During DNA replication in the S - phase of interphase, the cell's DNA is duplicated so that when the cell divides (in the M - phase), each resulting daughter cell receives an identical and complete set of genetic material.

Answer:

It ensures each daughter cell gets a full set of DNA.