Answer:
The S stage (DNA sythesis)
Explanation:
During the S stage the cell synthesisis a new copy of DNA in the nucleus in preparation for cell devision.
The answer is epigenetic changes in their DNA. These are heritable
changes in gene function that do not involve changes in the DNA sequence. This
occurs through methylation patterns and histone modification on the DNA strand that
may result from external or environmental factors.
Nucleotides makes up each individual strand of DNA
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