The gametes formed by meiosis undergo two rounds of cell division. In the first round of meiosis, DNA is replicated prior to cell division as it is in mitosis. However, in the second round of meiosis, replication does not occur prior to cell division. What is the significance of this difference between the first and second rounds of meiosis to sexual reproduction?

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

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