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during which phases of meiosis is DNA copied?

1. Prophase I
2. Anaphase I
3. Interphase
4. Telophase I

1 answer

DNA is copied during Interphase, which occurs before meiosis begins. Specifically, the synthesis (S) phase of Interphase is when the DNA is replicated. Once meiosis starts, there is no further DNA replication.

To clarify the phases you listed:

  1. Prophase I - Chromosomes condense, and homologous chromosomes pair up, but no DNA replication occurs here.
  2. Anaphase I - Homologous chromosomes are pulled apart, and no DNA replication occurs.
  3. Interphase - This is the phase where DNA is copied.
  4. Telophase I - The cell prepares to divide, but again, no DNA replication occurs.

Therefore, the answer to your question is 3. Interphase.