Questions: During which phase of the cell cycle does DNA duplication, or replication, take place? View Available Hint(s) Prophase Metaphase Anaphase Interphase Submit When a double helix of DNA is replicated, two complete helices are formed. Together, these helices are called sister View Available Hint(s) chromatids centromeres telomeres chromosomes

During which phase of the cell cycle does DNA duplication, or replication, take place? View Available Hint(s) Prophase Metaphase Anaphase Interphase Submit When a double helix of DNA is replicated, two complete helices are formed. Together, these helices are called sister View Available Hint(s) chromatids centromeres telomeres chromosomes
Transcript text: During which phase of the cell cycle does DNA duplication, or replication, take place? View Available Hint(s) Prophase Metaphase Anaphase Interphase Submit Part B When a double helix of DNA is replicated, two complete helices are formed. Together, these helices are called sister $\qquad$ View Available Hint(s) chromatids centromeres telomeres chromosomes
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Solution

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The answer to the first question is the last one: Interphase.

Explanation:

  • Prophase: This is the first stage of mitosis, where the chromatin condenses into visible chromosomes, but DNA replication does not occur here.
  • Metaphase: This is the stage of mitosis where chromosomes align in the center of the cell, but DNA replication does not occur here.
  • Anaphase: This is the stage of mitosis where sister chromatids are pulled apart, but DNA replication does not occur here.
  • Interphase: This is the phase of the cell cycle where the cell prepares for division, and DNA replication occurs during the S phase of interphase.

The answer to the second question is the first one: sister chromatids.

Explanation:

  • Chromatids: After DNA replication, each chromosome consists of two identical sister chromatids, which are joined together at the centromere.
  • Centromeres: This is the region where the two sister chromatids are joined, not the term for the helices themselves.
  • Telomeres: These are the protective caps at the ends of chromosomes, not the term for the replicated helices.
  • Chromosomes: While the replicated DNA forms part of the chromosomes, the specific term for the two identical copies is sister chromatids.

In summary, DNA replication occurs during interphase, and the replicated DNA forms sister chromatids.

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